57640704 has 72 divisors (see below), whose sum is σ = 167379072. Its totient is φ = 17464320.

The previous prime is 57640673. The next prime is 57640721. The reversal of 57640704 is 40704675.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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, 5037 + ... + 11859.

Almost surely, 2^57640704 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 57640704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83689536).

57640704 is an abundant number, since it is smaller than the sum of its proper divisors (109738368).

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

57640704 is a wasteful number, since it uses less digits than its factorization.

57640704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853 (or 6839 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 57640704 is about 7592.1475222759. The cubic root of 57640704 is about 386.2867029774.

The spelling of 57640704 in words is "fifty-seven million, six hundred forty thousand, seven hundred four".