56644685 has 8 divisors (see below), whose sum is σ = 70317720. Its totient is φ = 43753024.

The previous prime is 56644649. The next prime is 56644711. The reversal of 56644685 is 58644665.

It can be written as a sum of positive squares in 4 ways, for example, as 14485636 + 42159049 = 3806^2 + 6493^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56644685 - 2¹⁰ = 56643661 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 195182 + ... + 195471.

It is an arithmetic number, because the mean of its divisors is an integer number (8789715).

Almost surely, 2^56644685 is an apocalyptic number.

It is an amenable number.

56644685 is a deficient number, since it is larger than the sum of its proper divisors (13673035).

56644685 is a wasteful number, since it uses less digits than its factorization.

56644685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390687.

The product of its digits is 691200, while the sum is 44.

The square root of 56644685 is about 7526.2663386303. The cubic root of 56644685 is about 384.0487789777.

The spelling of 56644685 in words is "fifty-six million, six hundred forty-four thousand, six hundred eighty-five".