56656618 has 8 divisors (see below), whose sum is σ = 85737348. Its totient is φ = 28077504.

The previous prime is 56656603. The next prime is 56656627. The reversal of 56656618 is 81665665.

It can be written as a sum of positive squares in 2 ways, for example, as 50737129 + 5919489 = 7123^2 + 2433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125121 + ... + 125572.

Almost surely, 2^56656618 is an apocalyptic number.

56656618 is a deficient number, since it is larger than the sum of its proper divisors (29080730).

56656618 is a wasteful number, since it uses less digits than its factorization.

56656618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250808.

The product of its digits is 259200, while the sum is 43.

The square root of 56656618 is about 7527.0590538404. The cubic root of 56656618 is about 384.0757455108.

The spelling of 56656618 in words is "fifty-six million, six hundred fifty-six thousand, six hundred eighteen".