56758691 has 4 divisors (see below), whose sum is σ = 61918584. Its totient is φ = 51598800.

The previous prime is 56758651. The next prime is 56758697. The reversal of 56758691 is 19685765.

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

It is not a de Polignac number, because 56758691 - 2²² = 52564387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56758697) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2579930 + ... + 2579951.

It is an arithmetic number, because the mean of its divisors is an integer number (15479646).

Almost surely, 2^56758691 is an apocalyptic number.

56758691 is a deficient number, since it is larger than the sum of its proper divisors (5159893).

56758691 is a wasteful number, since it uses less digits than its factorization.

56758691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159892.

The product of its digits is 453600, while the sum is 47.

The square root of 56758691 is about 7533.8364065063. The cubic root of 56758691 is about 384.3062584101.

The spelling of 56758691 in words is "fifty-six million, seven hundred fifty-eight thousand, six hundred ninety-one".