56715906 has 32 divisors (see below), whose sum is σ = 122810688. Its totient is φ = 17357760.

The previous prime is 56715881. The next prime is 56715929. The reversal of 56715906 is 60951765.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 13521 + ... + 17211.

It is an arithmetic number, because the mean of its divisors is an integer number (3837834).

Almost surely, 2^56715906 is an apocalyptic number.

56715906 is an abundant number, since it is smaller than the sum of its proper divisors (66094782).

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

56715906 is a wasteful number, since it uses less digits than its factorization.

56715906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 56715906 is about 7530.9963484256. The cubic root of 56715906 is about 384.2096701097.

The spelling of 56715906 in words is "fifty-six million, seven hundred fifteen thousand, nine hundred six".