57640564 has 6 divisors (see below), whose sum is σ = 100870994. Its totient is φ = 28820280.

The previous prime is 57640559. The next prime is 57640571. The reversal of 57640564 is 46504675.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50296464 + 7344100 = 7092^2 + 2710^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7205067 + ... + 7205074.

Almost surely, 2^57640564 is an apocalyptic number.

It is an amenable number.

57640564 is a deficient number, since it is larger than the sum of its proper divisors (43230430).

57640564 is a wasteful number, since it uses less digits than its factorization.

57640564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14410145 (or 14410143 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 57640564 is about 7592.1383022176. The cubic root of 57640564 is about 386.2863902344.

The spelling of 57640564 in words is "fifty-seven million, six hundred forty thousand, five hundred sixty-four".