56687686 has 16 divisors (see below), whose sum is σ = 96795648. Its totient is φ = 24646600.

The previous prime is 56687681. The next prime is 56687699. The reversal of 56687686 is 68678665.

56687686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56687681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55510 + ... + 56521.

It is an arithmetic number, because the mean of its divisors is an integer number (6049728).

Almost surely, 2^56687686 is an apocalyptic number.

56687686 is a deficient number, since it is larger than the sum of its proper divisors (40107962).

56687686 is a wasteful number, since it uses less digits than its factorization.

56687686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112067.

The product of its digits is 2903040, while the sum is 52.

The square root of 56687686 is about 7529.1225252349. The cubic root of 56687686 is about 384.1459361038.

The spelling of 56687686 in words is "fifty-six million, six hundred eighty-seven thousand, six hundred eighty-six".