627938864 has 40 divisors (see below), whose sum is σ = 1391696640. Its totient is φ = 268872768.

The previous prime is 627938851. The next prime is 627938869. The reversal of 627938864 is 468839726.

It is a super-2 number, since 2×627938864² = 788614433843220992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (627938869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179597 + ... + 183059.

It is an arithmetic number, because the mean of its divisors is an integer number (34792416).

Almost surely, 2^627938864 is an apocalyptic number.

It is an amenable number.

627938864 is an abundant number, since it is smaller than the sum of its proper divisors (763757776).

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

627938864 is a wasteful number, since it uses less digits than its factorization.

627938864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097 (or 5091 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The square root of 627938864 is about 25058.7083466008. The cubic root of 627938864 is about 856.3259814720.

The spelling of 627938864 in words is "six hundred twenty-seven million, nine hundred thirty-eight thousand, eight hundred sixty-four".