56670591 has 8 divisors (see below), whose sum is σ = 75919744. Its totient is φ = 37600920.

The previous prime is 56670587. The next prime is 56670613. The reversal of 56670591 is 19507665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56670591 - 2² = 56670587 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 (56670541) 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, 44131 + ... + 45396.

It is an arithmetic number, because the mean of its divisors is an integer number (9489968).

Almost surely, 2^56670591 is an apocalyptic number.

56670591 is a deficient number, since it is larger than the sum of its proper divisors (19249153).

56670591 is a wasteful number, since it uses less digits than its factorization.

56670591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89741.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 56670591 is about 7527.9871811793. The cubic root of 56670591 is about 384.1073172815.

The spelling of 56670591 in words is "fifty-six million, six hundred seventy thousand, five hundred ninety-one".