56166664 has 16 divisors (see below), whose sum is σ = 105619500. Its totient is φ = 28001472.

The previous prime is 56166661. The next prime is 56166683. The reversal of 56166664 is 46666165.

It can be written as a sum of positive squares in 2 ways, for example, as 56100100 + 66564 = 7490^2 + 258^2 .

It is not an unprimeable number, because it can be changed into a prime (56166661) 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, 7267 + ... + 12850.

Almost surely, 2^56166664 is an apocalyptic number.

It is an amenable number.

56166664 is a deficient number, since it is larger than the sum of its proper divisors (49452836).

56166664 is a wasteful number, since it uses less digits than its factorization.

56166664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20472 (or 20468 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 56166664 is about 7494.4422073961. The cubic root of 56166664 is about 382.9654044154.

The spelling of 56166664 in words is "fifty-six million, one hundred sixty-six thousand, six hundred sixty-four".