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70 (seventy) is the natural number following 69 and preceding 71.

Cardinal 70
seventy
Ordinal 70th
seventieth
Numeral system
Factorization2 \cdot 5 \cdot 7
Divisors 2, 5, 7, 10, 14, 35
Roman numeralLXX
Binary1000110
Hexadecimal46
Hebrewע (Ayin)

In mathematics


70 is a Pell number and a Harshad number. Its factorization makes it a sphenic number. It is the seventh pentagonal number and the fourth 13-gonal number, as well as the fifth pentatope number. It is the smallest weird number.

In science


Astronomy

In religion


In other fields


70 is:

 

This article is licensed under the GNU Free Documentation License. It uses material from the "70 (number)".

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