56985618 has 16 divisors (see below), whose sum is σ = 114168096. Its totient is φ = 18962400.

The previous prime is 56985601. The next prime is 56985629. The reversal of 56985618 is 81658965.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4296 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (7135506).

Almost surely, 2^56985618 is an apocalyptic number.

56985618 is an abundant number, since it is smaller than the sum of its proper divisors (57182478).

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

56985618 is a wasteful number, since it uses less digits than its factorization.

56985618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16409.

The product of its digits is 518400, while the sum is 48.

The square root of 56985618 is about 7548.8819039643. The cubic root of 56985618 is about 384.8177424849.

The spelling of 56985618 in words is "fifty-six million, nine hundred eighty-five thousand, six hundred eighteen".