56618680 has 16 divisors (see below), whose sum is σ = 127392120. Its totient is φ = 22647456.

The previous prime is 56618669. The next prime is 56618693. The reversal of 56618680 is 8681665.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1415467 = 56618680 / (5 + 6 + 6 + 1 + 8 + 6 + 8 + 0).

It is a congruent number.

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, 707694 + ... + 707773.

Almost surely, 2^56618680 is an apocalyptic number.

It is an amenable number.

56618680 is an abundant number, since it is smaller than the sum of its proper divisors (70773440).

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

56618680 is a wasteful number, since it uses less digits than its factorization.

56618680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415478 (or 1415474 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 56618680 is about 7524.5385240558. The cubic root of 56618680 is about 383.9899990162.

It can be divided in two parts, 5661 and 8680, that added together give a palindrome (14341).

The spelling of 56618680 in words is "fifty-six million, six hundred eighteen thousand, six hundred eighty".