57664208 has 20 divisors (see below), whose sum is σ = 127685280. Its totient is φ = 24713184.

The previous prime is 57664207. The next prime is 57664231. The reversal of 57664208 is 80246675.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57664207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257318 + ... + 257541.

It is an arithmetic number, because the mean of its divisors is an integer number (6384264).

Almost surely, 2^57664208 is an apocalyptic number.

It is an amenable number.

57664208 is an abundant number, since it is smaller than the sum of its proper divisors (70021072).

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

57664208 is a wasteful number, since it uses less digits than its factorization.

57664208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514874 (or 514868 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 57664208 is about 7593.6952796382. The cubic root of 57664208 is about 386.3392008839.

The spelling of 57664208 in words is "fifty-seven million, six hundred sixty-four thousand, two hundred eight".