56785687 has 8 divisors (see below), whose sum is σ = 64944000. Its totient is φ = 48638904.

The previous prime is 56785681. The next prime is 56785691. The reversal of 56785687 is 78658765.

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

It is a cyclic number.

It is not a de Polignac number, because 56785687 - 2³ = 56785679 is a prime.

It is a super-2 number, since 2×56785687² = 6449228496123938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56785681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15564 + ... + 18862.

It is an arithmetic number, because the mean of its divisors is an integer number (8118000).

Almost surely, 2^56785687 is an apocalyptic number.

56785687 is a deficient number, since it is larger than the sum of its proper divisors (8158313).

56785687 is a wasteful number, since it uses less digits than its factorization.

56785687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5765.

The product of its digits is 2822400, while the sum is 52.

The square root of 56785687 is about 7535.6278437832. The cubic root of 56785687 is about 384.3671776406.

The spelling of 56785687 in words is "fifty-six million, seven hundred eighty-five thousand, six hundred eighty-seven".