56617688 has 8 divisors (see below), whose sum is σ = 106158180. Its totient is φ = 28308840.

The previous prime is 56617681. The next prime is 56617709. The reversal of 56617688 is 88671665.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56617681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3538598 + ... + 3538613.

Almost surely, 2^56617688 is an apocalyptic number.

It is an amenable number.

56617688 is a deficient number, since it is larger than the sum of its proper divisors (49540492).

56617688 is a wasteful number, since it uses less digits than its factorization.

56617688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077217 (or 7077213 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 56617688 is about 7524.4726061034. The cubic root of 56617688 is about 383.9877564094.

The spelling of 56617688 in words is "fifty-six million, six hundred seventeen thousand, six hundred eighty-eight".