60 (number)

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60 (sixty) is the natural number following 59 and preceding 61.

← 60 61 62 63 64 65 66 67 68 69 → List of numbers — Integers 0 10 20 30 40 50 60 70 80 90 →
Cardinal	60 sixty
Ordinal	60th sixtieth
Numeral system	sexagesimal
Factorization	$2^2 \cdot 3 \cdot 5$
Divisors	1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
Roman numeral	LX
Roman numeral (Unicode)	LX, lx
Binary	111100
Octal	74
Duodecimal	50
Hexadecimal	3C
Gematria	ס (Samekh)

Look up sixty in
Wiktionary, the free dictionary.

1 In mathematics
2 In science
- 2.1 Astronomy
3 In religion
4 In other fields
5 In music
6 In sports
7 Historical years

[edit] In mathematics

Sixty is a composite number with divisors 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, making it also a highly composite number. Because 60 is the sum of its unitary divisors (excluding itself), it is a unitary perfect number. Being ten times a perfect number, 60 is a semiperfect number.

60 is the smallest number divisible by the numbers 1 to 6. (There is no smaller number divisible by the numbers 1 to 5). 60 is the smallest number with exactly 12 divisors.

This number is the sum of a pair of twin primes (29 + 31), as well as the sum of four consecutive primes (11 + 13 + 17 + 19).

The smallest non-abelian simple group has order 60.

In normal space, the 3 interior angles of an equilateral triangle each measure 60 degrees, adding up to 180 degrees.

The Babylonian number system had a base of sixty. A number system with base-sixty is called the sexagesimal (original meaning of sexagesimal is sixtieth).

The sexagenary cycle plays a role in Chinese calendar and numerology.　(Originally, sexagenary means sixty each, also centenary means one hundred each.)

Because 60 is divisible by the sum of its digits in base 10, it is a Harshad number.

In German: das Schock and in Latin: sexagena equals 60 = 5 dozen = 1/2 small gross. This quantity was used in international medieval treaties e.g. for ransom of captured Teutonic Knights.

[edit] In science

The atomic number of neodymium, a lanthanide. The neodymium following element with the ordinal number 61 (promethium) has in contrast to the neighbour elements no stable isotopes.

[edit] Astronomy

Messier object M60, a magnitude 10.5 galaxy in the constellation Virgo
The New General Catalogue object NGC 60, a spiral galaxy in the constellation Pisces
The Saros number of the solar eclipse series which began on -1020 May 18 and ended on 260 June 26. The duration of Saros series 60 was 1280.1 years, and it contained 72 solar eclipses. The Saros number of the lunar eclipse series which began on -700 March 8 and ended on 616 May 7. The duration of Saros series 60 was 1316.2 years, and it contained 74 lunar eclipses.

[edit] In religion

In the Bedtime Shema, the number of strong men (giborim) said to surround King Solomon's bed

[edit] In other fields

Sixty is:

In time, the number of seconds in a minute, and the number of minutes in an hour
In geometry, the number of seconds in a minute, and the number of minutes in a degree
60 Minutes, a popular investigative television show
“Sixty Minute Man” is a TV show starring Kenny Baumann
The number of the European route E60 from Brest, France to Constanţa, Romania
A common speed limit, in miles per hour, for freeways in many U.S. states
A common speed limit, in kilometers per hour, in urban areas in Russia
In years of marriage, the diamond wedding anniversary
The maximum number of marbles (game pieces) in Chinese checkers
The code for international direct dial calls to Malaysia
The highest obtainable level on World of Warcraft (not including World of Warcraft: The Burning Crusade)
"Studio 60 on the Sunset Strip" is a TV show on NBC
"Gone in Sixty Seconds" is a movie starring Nicholas Cage
Miss Sixty is women's fashion apparel
60 floors in New York's Woolworth Building
The total number of cards in the game Racko.

[edit] In music

“Sixty Minute Man,” a song by the Dominoes
"60 Second Song for a Bank, with the Words, May We Help You," a song by John Denver
"Sixty Years On," a song by Elton John