57663664 has 20 divisors (see below), whose sum is σ = 112314240. Its totient is φ = 28679360.

The previous prime is 57663659. The next prime is 57663667. The reversal of 57663664 is 46636675.

It is a self number, because there is not a number n which added to its sum of digits gives 57663664.

It is not an unprimeable number, because it can be changed into a prime (57663667) 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, 6379 + ... + 12490.

It is an arithmetic number, because the mean of its divisors is an integer number (5615712).

Almost surely, 2^57663664 is an apocalyptic number.

It is an amenable number.

57663664 is a deficient number, since it is larger than the sum of its proper divisors (54650576).

57663664 is a wasteful number, since it uses less digits than its factorization.

57663664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19068 (or 19062 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The square root of 57663664 is about 7593.6594603656. The cubic root of 57663664 is about 386.3379859813.

The spelling of 57663664 in words is "fifty-seven million, six hundred sixty-three thousand, six hundred sixty-four".