57864644 has 12 divisors (see below), whose sum is σ = 101625468. Its totient is φ = 28828800.

The previous prime is 57864641. The next prime is 57864649. The reversal of 57864644 is 44646875.

It can be written as a sum of positive squares in 2 ways, for example, as 25806400 + 32058244 = 5080^2 + 5662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57864595 and 57864604.

It is not an unprimeable number, because it can be changed into a prime (57864641) 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, 24617 + ... + 26864.

It is an arithmetic number, because the mean of its divisors is an integer number (8468789).

Almost surely, 2^57864644 is an apocalyptic number.

It is an amenable number.

57864644 is a deficient number, since it is larger than the sum of its proper divisors (43760824).

57864644 is a wasteful number, since it uses less digits than its factorization.

57864644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51766 (or 51764 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The square root of 57864644 is about 7606.8813583492. The cubic root of 57864644 is about 386.7863109076.

The spelling of 57864644 in words is "fifty-seven million, eight hundred sixty-four thousand, six hundred forty-four".