57065904 has 160 divisors (see below), whose sum is σ = 189987840. Its totient is φ = 16063488.

The previous prime is 57065893. The next prime is 57065917. The reversal of 57065904 is 40956075.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341629 + ... + 341795.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^57065904 is an apocalyptic number.

57065904 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57065904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94993920).

57065904 is an abundant number, since it is smaller than the sum of its proper divisors (132921936).

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

57065904 is a wasteful number, since it uses less digits than its factorization.

57065904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 57065904 is about 7554.1977734237. The cubic root of 57065904 is about 384.9983785843.

The spelling of 57065904 in words is "fifty-seven million, sixty-five thousand, nine hundred four".