56688766 has 4 divisors (see below), whose sum is σ = 85033152. Its totient is φ = 28344382.

The previous prime is 56688757. The next prime is 56688811. The reversal of 56688766 is 66788665.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 14172190 + ... + 14172193.

It is an arithmetic number, because the mean of its divisors is an integer number (21258288).

Almost surely, 2^56688766 is an apocalyptic number.

56688766 is a deficient number, since it is larger than the sum of its proper divisors (28344386).

56688766 is a wasteful number, since it uses less digits than its factorization.

56688766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28344385.

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

The square root of 56688766 is about 7529.1942463985. The cubic root of 56688766 is about 384.1483756399.

The spelling of 56688766 in words is "fifty-six million, six hundred eighty-eight thousand, seven hundred sixty-six".