57664432 has 40 divisors (see below), whose sum is σ = 128491776. Its totient is φ = 24557376.

The previous prime is 57664403. The next prime is 57664469. The reversal of 57664432 is 23446675.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 57664391 and 57664400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17163 + ... + 20245.

Almost surely, 2^57664432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57664432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64245888).

57664432 is an abundant number, since it is smaller than the sum of its proper divisors (70827344).

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

57664432 is a wasteful number, since it uses less digits than its factorization.

57664432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265 (or 3259 counting only the distinct ones).

The product of its digits is 120960, while the sum is 37.

The square root of 57664432 is about 7593.7100287014. The cubic root of 57664432 is about 386.3397011357.

The spelling of 57664432 in words is "fifty-seven million, six hundred sixty-four thousand, four hundred thirty-two".