56686625 has 16 divisors (see below), whose sum is σ = 70958160. Its totient is φ = 45212800.

The previous prime is 56686589. The next prime is 56686657. The reversal of 56686625 is 52668665.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 28987456 + 27699169 = 5384^2 + 5263^2 .

It is not a de Polignac number, because 56686625 - 2⁸ = 56686369 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 70727 + ... + 71523.

It is an arithmetic number, because the mean of its divisors is an integer number (4434885).

Almost surely, 2^56686625 is an apocalyptic number.

It is an amenable number.

56686625 is a deficient number, since it is larger than the sum of its proper divisors (14271535).

56686625 is an equidigital number, since it uses as much as digits as its factorization.

56686625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1371 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 56686625 is about 7529.0520651673. The cubic root of 56686625 is about 384.1435394552.

The spelling of 56686625 in words is "fifty-six million, six hundred eighty-six thousand, six hundred twenty-five".