57645684 has 18 divisors (see below), whose sum is σ = 145715570. Its totient is φ = 19215216.

The previous prime is 57645683. The next prime is 57645719. The reversal of 57645684 is 48654675.

It can be written as a sum of positive squares in only one way, i.e., 56700900 + 944784 = 7530^2 + 972^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57645683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 800599 + ... + 800670.

Almost surely, 2^57645684 is an apocalyptic number.

It is an amenable number.

57645684 is an abundant number, since it is smaller than the sum of its proper divisors (88069886).

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

57645684 is a wasteful number, since it uses less digits than its factorization.

57645684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601279 (or 1601274 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 57645684 is about 7592.4754856371. The cubic root of 57645684 is about 386.2978273637.

The spelling of 57645684 in words is "fifty-seven million, six hundred forty-five thousand, six hundred eighty-four".