56668956 has 24 divisors (see below), whose sum is σ = 140006160. Its totient is φ = 17778432.

The previous prime is 56668949. The next prime is 56668957. The reversal of 56668956 is 65986665.

It is a super-2 number, since 2×56668956² = 6422741148259872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 56668899 and 56668908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56668957) 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, 138691 + ... + 139098.

It is an arithmetic number, because the mean of its divisors is an integer number (5833590).

Almost surely, 2^56668956 is an apocalyptic number.

It is an amenable number.

56668956 is an abundant number, since it is smaller than the sum of its proper divisors (83337204).

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

56668956 is a wasteful number, since it uses less digits than its factorization.

56668956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277813 (or 277811 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 51.

The square root of 56668956 is about 7527.8785856309. The cubic root of 56668956 is about 384.1036232932.

The spelling of 56668956 in words is "fifty-six million, six hundred sixty-eight thousand, nine hundred fifty-six".