57331686 has 16 divisors (see below), whose sum is σ = 119649024. Its totient is φ = 18279624.

The previous prime is 57331661. The next prime is 57331691. The reversal of 57331686 is 68613375.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207586 + ... + 207861.

It is an arithmetic number, because the mean of its divisors is an integer number (7478064).

Almost surely, 2^57331686 is an apocalyptic number.

57331686 is an abundant number, since it is smaller than the sum of its proper divisors (62317338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57331686 is a wasteful number, since it uses less digits than its factorization.

57331686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415475.

The product of its digits is 90720, while the sum is 39.

The square root of 57331686 is about 7571.7690139095. The cubic root of 57331686 is about 385.5951575280.

The spelling of 57331686 in words is "fifty-seven million, three hundred thirty-one thousand, six hundred eighty-six".