57683991 has 8 divisors (see below), whose sum is σ = 77038720. Its totient is φ = 38392632.

The previous prime is 57683939. The next prime is 57684037. The reversal of 57683991 is 19938675.

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

It is not a de Polignac number, because 57683991 - 2²² = 53489687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57683991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57683891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13675 + ... + 17388.

It is an arithmetic number, because the mean of its divisors is an integer number (9629840).

Almost surely, 2^57683991 is an apocalyptic number.

57683991 is a deficient number, since it is larger than the sum of its proper divisors (19354729).

57683991 is a wasteful number, since it uses less digits than its factorization.

57683991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31685.

The product of its digits is 408240, while the sum is 48.

The square root of 57683991 is about 7594.9977616850. The cubic root of 57683991 is about 386.3833766087.

The spelling of 57683991 in words is "fifty-seven million, six hundred eighty-three thousand, nine hundred ninety-one".