56768391 has 8 divisors (see below), whose sum is σ = 84101360. Its totient is φ = 37845576.

The previous prime is 56768381. The next prime is 56768449. The reversal of 56768391 is 19386765.

It is a happy number.

56768391 is a `hidden beast` number, since 567 + 6 + 83 + 9 + 1 = 666.

It is not a de Polignac number, because 56768391 - 2⁵ = 56768359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56768351) 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, 1051240 + ... + 1051293.

It is an arithmetic number, because the mean of its divisors is an integer number (10512670).

Almost surely, 2^56768391 is an apocalyptic number.

56768391 is a deficient number, since it is larger than the sum of its proper divisors (27332969).

56768391 is a wasteful number, since it uses less digits than its factorization.

56768391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102542 (or 2102536 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 56768391 is about 7534.4801413236. The cubic root of 56768391 is about 384.3281496735.

The spelling of 56768391 in words is "fifty-six million, seven hundred sixty-eight thousand, three hundred ninety-one".