56690591597 has 4 divisors (see below), whose sum is σ = 57136974336. Its totient is φ = 56244208860.

The previous prime is 56690591549. The next prime is 56690591641. The reversal of 56690591597 is 79519509665.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56690591597 - 2¹⁰ = 56690590573 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 (56690591197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223191179 + ... + 223191432.

It is an arithmetic number, because the mean of its divisors is an integer number (14284243584).

Almost surely, 2^56690591597 is an apocalyptic number.

It is an amenable number.

56690591597 is a deficient number, since it is larger than the sum of its proper divisors (446382739).

56690591597 is a wasteful number, since it uses less digits than its factorization.

56690591597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446382738.

The product of its (nonzero) digits is 22963500, while the sum is 62.

The spelling of 56690591597 in words is "fifty-six billion, six hundred ninety million, five hundred ninety-one thousand, five hundred ninety-seven".