57656688 has 40 divisors (see below), whose sum is σ = 151478400. Its totient is φ = 18892224.

The previous prime is 57656681. The next prime is 57656689. The reversal of 57656688 is 88665675.

It is a super-4 number, since 4×57656688⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 57656688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57656681) 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, 7348 + ... + 13011.

It is an arithmetic number, because the mean of its divisors is an integer number (3786960).

Almost surely, 2^57656688 is an apocalyptic number.

It is an amenable number.

57656688 is an abundant number, since it is smaller than the sum of its proper divisors (93821712).

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

57656688 is a wasteful number, since it uses less digits than its factorization.

57656688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20429 (or 20423 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 57656688 is about 7593.2001158932. The cubic root of 57656688 is about 386.3224059650.

The spelling of 57656688 in words is "fifty-seven million, six hundred fifty-six thousand, six hundred eighty-eight".