626057664 has 28 divisors (see below), whose sum is σ = 1656444744. Its totient is φ = 208685824.

The previous prime is 626057647. The next prime is 626057669. The reversal of 626057664 is 466750626.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626057669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630167 + ... + 1630550.

Almost surely, 2^626057664 is an apocalyptic number.

626057664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

626057664 is an abundant number, since it is smaller than the sum of its proper divisors (1030387080).

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

626057664 is a wasteful number, since it uses less digits than its factorization.

626057664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260732 (or 3260722 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 626057664 is about 25021.1443383391. The cubic root of 626057664 is about 855.4699895411.

The spelling of 626057664 in words is "six hundred twenty-six million, fifty-seven thousand, six hundred sixty-four".