56687685 has 16 divisors (see below), whose sum is σ = 93626880. Its totient is φ = 29257920.

The previous prime is 56687681. The next prime is 56687699. The reversal of 56687685 is 58678665.

56687685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56687685 - 2² = 56687681 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 60490 + ... + 61419.

It is an arithmetic number, because the mean of its divisors is an integer number (5851680).

Almost surely, 2^56687685 is an apocalyptic number.

It is an amenable number.

56687685 is a deficient number, since it is larger than the sum of its proper divisors (36939195).

56687685 is a wasteful number, since it uses less digits than its factorization.

56687685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121948.

The product of its digits is 2419200, while the sum is 51.

The square root of 56687685 is about 7529.1224588261. The cubic root of 56687685 is about 384.1459338449.

The spelling of 56687685 in words is "fifty-six million, six hundred eighty-seven thousand, six hundred eighty-five".