56664260 has 48 divisors (see below), whose sum is σ = 124104960. Its totient is φ = 21705600.

The previous prime is 56664259. The next prime is 56664299. The reversal of 56664260 is 6246665.

It is a super-2 number, since 2×56664260² = 6421676722695200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56664260.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87257 + ... + 87903.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^56664260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56664260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62052480).

56664260 is an abundant number, since it is smaller than the sum of its proper divisors (67440700).

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

56664260 is a wasteful number, since it uses less digits than its factorization.

56664260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 56664260 is about 7527.5666719067. The cubic root of 56664260 is about 384.0930131310.

The spelling of 56664260 in words is "fifty-six million, six hundred sixty-four thousand, two hundred sixty".