57815664 has 20 divisors (see below), whose sum is σ = 149357256. Its totient is φ = 19271872.

The previous prime is 57815663. The next prime is 57815683. The reversal of 57815664 is 46651875.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57815663) 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, 602199 + ... + 602294.

Almost surely, 2^57815664 is an apocalyptic number.

It is an amenable number.

57815664 is an abundant number, since it is smaller than the sum of its proper divisors (91541592).

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

57815664 is a wasteful number, since it uses less digits than its factorization.

57815664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204504 (or 1204498 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 57815664 is about 7603.6612233844. The cubic root of 57815664 is about 386.6771472916.

The spelling of 57815664 in words is "fifty-seven million, eight hundred fifteen thousand, six hundred sixty-four".