57390666 has 32 divisors (see below), whose sum is σ = 118326528. Its totient is φ = 18547200.

The previous prime is 57390661. The next prime is 57390701. The reversal of 57390666 is 66609375.

It is not an unprimeable number, because it can be changed into a prime (57390661) 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, 30966 + ... + 32766.

It is an arithmetic number, because the mean of its divisors is an integer number (3697704).

Almost surely, 2^57390666 is an apocalyptic number.

57390666 is an abundant number, since it is smaller than the sum of its proper divisors (60935862).

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

57390666 is a wasteful number, since it uses less digits than its factorization.

57390666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 57390666 is about 7575.6627432852. The cubic root of 57390666 is about 385.7273392800.

The spelling of 57390666 in words is "fifty-seven million, three hundred ninety thousand, six hundred sixty-six".