56730613 has 4 divisors (see below), whose sum is σ = 57024748. Its totient is φ = 56436480.

The previous prime is 56730601. The next prime is 56730623. The reversal of 56730613 is 31603765.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27060804 + 29669809 = 5202^2 + 5447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56730613 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 (56730623) 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, 146778 + ... + 147163.

It is an arithmetic number, because the mean of its divisors is an integer number (14256187).

Almost surely, 2^56730613 is an apocalyptic number.

It is an amenable number.

56730613 is a deficient number, since it is larger than the sum of its proper divisors (294135).

56730613 is a wasteful number, since it uses less digits than its factorization.

56730613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294134.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 56730613 is about 7531.9727163606. The cubic root of 56730613 is about 384.2428770391.

The spelling of 56730613 in words is "fifty-six million, seven hundred thirty thousand, six hundred thirteen".