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Seventy (70, LXX) is a natural number following sixty-nine and preceding seventy-one. It is a composite number with the divisors being 2, 5, 7, 10, 14 and 35. It is a sphenic number and a Pell number. Its factorization is:

See also: sixty, seventy, eighty, integer, list of numbers.

Seventy is also:

For the year AD 70, see 70.