56600661 has 32 divisors (see below), whose sum is σ = 83825280. Its totient is φ = 33755904.

The previous prime is 56600657. The next prime is 56600671. The reversal of 56600661 is 16600665.

It is not a de Polignac number, because 56600661 - 2² = 56600657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56600611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287215 + ... + 287411.

It is an arithmetic number, because the mean of its divisors is an integer number (2619540).

Almost surely, 2^56600661 is an apocalyptic number.

It is an amenable number.

56600661 is a deficient number, since it is larger than the sum of its proper divisors (27224619).

56600661 is a wasteful number, since it uses less digits than its factorization.

56600661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 56600661 is about 7523.3410796002. The cubic root of 56600661 is about 383.9492595174.

The spelling of 56600661 in words is "fifty-six million, six hundred thousand, six hundred sixty-one".