57691613 has 16 divisors (see below), whose sum is σ = 70108416. Its totient is φ = 46400640.

The previous prime is 57691609. The next prime is 57691631. The reversal of 57691613 is 31619675.

It is a cyclic number.

It is not a de Polignac number, because 57691613 - 2² = 57691609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57691603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5153 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (4381776).

Almost surely, 2^57691613 is an apocalyptic number.

57691613 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

57691613 is a deficient number, since it is larger than the sum of its proper divisors (12416803).

57691613 is a wasteful number, since it uses less digits than its factorization.

57691613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844.

The product of its digits is 34020, while the sum is 38.

The square root of 57691613 is about 7595.4995227437. The cubic root of 57691613 is about 386.4003939494.

The spelling of 57691613 in words is "fifty-seven million, six hundred ninety-one thousand, six hundred thirteen".