56664012 has 12 divisors (see below), whose sum is σ = 132216056. Its totient is φ = 18888000.

The previous prime is 56663993. The next prime is 56664037. The reversal of 56664012 is 21046665.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×56664012² = 6421620511872288, which contains 22 as substring.

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, 2360989 + ... + 2361012.

Almost surely, 2^56664012 is an apocalyptic number.

It is an amenable number.

56664012 is an abundant number, since it is smaller than the sum of its proper divisors (75552044).

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

56664012 is a wasteful number, since it uses less digits than its factorization.

56664012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722008 (or 4722006 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 56664012 is about 7527.5501991020. The cubic root of 56664012 is about 384.0924527825.

The spelling of 56664012 in words is "fifty-six million, six hundred sixty-four thousand, twelve".