56506668 has 12 divisors (see below), whose sum is σ = 131848920. Its totient is φ = 18835552.

The previous prime is 56506631. The next prime is 56506669. The reversal of 56506668 is 86660565.

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

It is not an unprimeable number, because it can be changed into a prime (56506669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2354433 + ... + 2354456.

It is an arithmetic number, because the mean of its divisors is an integer number (10987410).

Almost surely, 2^56506668 is an apocalyptic number.

It is an amenable number.

56506668 is an abundant number, since it is smaller than the sum of its proper divisors (75342252).

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

56506668 is a wasteful number, since it uses less digits than its factorization.

56506668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708896 (or 4708894 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 56506668 is about 7517.0917248627. The cubic root of 56506668 is about 383.7366086568.

The spelling of 56506668 in words is "fifty-six million, five hundred six thousand, six hundred sixty-eight".