626979904 has 28 divisors (see below), whose sum is σ = 1273102864. Its totient is φ = 306198144.

The previous prime is 626979901. The next prime is 626979923. The reversal of 626979904 is 409979626.

It is not an unprimeable number, because it can be changed into a prime (626979901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111162 + ... + 116665.

Almost surely, 2^626979904 is an apocalyptic number.

626979904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

626979904 is an abundant number, since it is smaller than the sum of its proper divisors (646122960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

626979904 is a wasteful number, since it uses less digits than its factorization.

626979904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227882 (or 227872 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 626979904 is about 25039.5667694152. The cubic root of 626979904 is about 855.8898452016.

The spelling of 626979904 in words is "six hundred twenty-six million, nine hundred seventy-nine thousand, nine hundred four".