56692887866 has 4 divisors (see below), whose sum is σ = 85039331802. Its totient is φ = 28346443932.

The previous prime is 56692887863. The next prime is 56692887893. The reversal of 56692887866 is 66878829665.

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

It can be written as a sum of positive squares in only one way, i.e., 44708988025 + 11983899841 = 211445^2 + 109471^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56692887866.

It is not an unprimeable number, because it can be changed into a prime (56692887863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14173221965 + ... + 14173221968.

Almost surely, 2^56692887866 is an apocalyptic number.

56692887866 is a deficient number, since it is larger than the sum of its proper divisors (28346443936).

56692887866 is a wasteful number, since it uses less digits than its factorization.

56692887866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28346443935.

The product of its digits is 418037760, while the sum is 71.

The spelling of 56692887866 in words is "fifty-six billion, six hundred ninety-two million, eight hundred eighty-seven thousand, eight hundred sixty-six".