57709613 has 6 divisors (see below), whose sum is σ = 62490474. Its totient is φ = 53270256.

The previous prime is 57709601. The next prime is 57709621. The reversal of 57709613 is 31690775.

It can be written as a sum of positive squares in 3 ways, for example, as 5031049 + 52678564 = 2243^2 + 7258^2 .

It is not a de Polignac number, because 57709613 - 2⁶ = 57709549 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 (57700613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170570 + ... + 170907.

It is an arithmetic number, because the mean of its divisors is an integer number (10415079).

Almost surely, 2^57709613 is an apocalyptic number.

It is an amenable number.

57709613 is a deficient number, since it is larger than the sum of its proper divisors (4780861).

57709613 is a wasteful number, since it uses less digits than its factorization.

57709613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341503 (or 341490 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 57709613 is about 7596.6843425273. The cubic root of 57709613 is about 386.4405758956.

The spelling of 57709613 in words is "fifty-seven million, seven hundred nine thousand, six hundred thirteen".