56664460 has 48 divisors (see below), whose sum is σ = 128348640. Its totient is φ = 20943360.

The previous prime is 56664457. The next prime is 56664499. The reversal of 56664460 is 6446665.

It is a super-2 number, since 2×56664460² = 6421722054183200, which contains 22 as substring.

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, 13762 + ... + 17398.

It is an arithmetic number, because the mean of its divisors is an integer number (2673930).

Almost surely, 2^56664460 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 56664460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64174320).

56664460 is an abundant number, since it is smaller than the sum of its proper divisors (71684180).

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

56664460 is a wasteful number, since it uses less digits than its factorization.

56664460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 56664460 is about 7527.5799564003. The cubic root of 56664460 is about 384.0934650238.

The spelling of 56664460 in words is "fifty-six million, six hundred sixty-four thousand, four hundred sixty".