56686674 has 64 divisors (see below), whose sum is σ = 130636800. Its totient is φ = 16230720.

The previous prime is 56686657. The next prime is 56686691. The reversal of 56686674 is 47668665.

It is an interprime number because it is at equal distance from previous prime (56686657) and next prime (56686691).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162252 + ... + 162600.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^56686674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56686674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65318400).

56686674 is an abundant number, since it is smaller than the sum of its proper divisors (73950126).

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

56686674 is a wasteful number, since it uses less digits than its factorization.

56686674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495.

The product of its digits is 1451520, while the sum is 48.

The square root of 56686674 is about 7529.0553192283. The cubic root of 56686674 is about 384.1436501399.

Subtracting from 56686674 its reverse (47668665), we obtain a square (9018009 = 3003²).

The spelling of 56686674 in words is "fifty-six million, six hundred eighty-six thousand, six hundred seventy-four".