56847691 has 4 divisors (see below), whose sum is σ = 57696232. Its totient is φ = 55999152.

The previous prime is 56847671. The next prime is 56847719. The reversal of 56847691 is 19674865.

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

It is a cyclic number.

It is not a de Polignac number, because 56847691 - 2⁹ = 56847179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56847611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424170 + ... + 424303.

It is an arithmetic number, because the mean of its divisors is an integer number (14424058).

Almost surely, 2^56847691 is an apocalyptic number.

56847691 is a deficient number, since it is larger than the sum of its proper divisors (848541).

56847691 is an equidigital number, since it uses as much as digits as its factorization.

56847691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848540.

The product of its digits is 362880, while the sum is 46.

The square root of 56847691 is about 7539.7407780374. The cubic root of 56847691 is about 384.5070229366.

The spelling of 56847691 in words is "fifty-six million, eight hundred forty-seven thousand, six hundred ninety-one".