56613680 has 20 divisors (see below), whose sum is σ = 131626992. Its totient is φ = 22645440.

The previous prime is 56613659. The next prime is 56613703. The reversal of 56613680 is 8631665.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 56613680.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353756 + ... + 353915.

Almost surely, 2^56613680 is an apocalyptic number.

It is an amenable number.

56613680 is an abundant number, since it is smaller than the sum of its proper divisors (75013312).

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

56613680 is a wasteful number, since it uses less digits than its factorization.

56613680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707684 (or 707678 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 56613680 is about 7524.2062704315. The cubic root of 56613680 is about 383.9786952879.

The spelling of 56613680 in words is "fifty-six million, six hundred thirteen thousand, six hundred eighty".