56686 has 8 divisors (see below), whose sum is σ = 97200. Its totient is φ = 24288.

The previous prime is 56681. The next prime is 56687. The reversal of 56686 is 68665.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56681) by changing a digit.

56686 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 2011 + ... + 2038.

It is an arithmetic number, because the mean of its divisors is an integer number (12150).

2⁵⁶⁶⁸⁶ is an apocalyptic number.

56686 is a deficient number, since it is larger than the sum of its proper divisors (40514).

56686 is a wasteful number, since it uses less digits than its factorization.

56686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4058.

The product of its digits is 8640, while the sum is 31.

The square root of 56686 is about 238.0882189442. The cubic root of 56686 is about 38.4142127655.

It can be divided in two parts, 56 and 686, that multiplied together give a 4-th power (38416 = 14⁴).

The spelling of 56686 in words is "fifty-six thousand, six hundred eighty-six".