56747656 has 32 divisors (see below), whose sum is σ = 122106240. Its totient is φ = 24219648.

The previous prime is 56747653. The next prime is 56747657. The reversal of 56747656 is 65674765.

It is a super-2 number, since 2×56747656² = 6440592922988672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56747653) 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, 12421 + ... + 16363.

It is an arithmetic number, because the mean of its divisors is an integer number (3815820).

Almost surely, 2^56747656 is an apocalyptic number.

56747656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56747656 is an abundant number, since it is smaller than the sum of its proper divisors (65358584).

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

56747656 is a wasteful number, since it uses less digits than its factorization.

56747656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213 (or 4209 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 46.

The square root of 56747656 is about 7533.1040083089. The cubic root of 56747656 is about 384.2813512440.

The spelling of 56747656 in words is "fifty-six million, seven hundred forty-seven thousand, six hundred fifty-six".