57640868 has 6 divisors (see below), whose sum is σ = 100871526. Its totient is φ = 28820432.

The previous prime is 57640867. The next prime is 57640871. The reversal of 57640868 is 86804675.

It can be written as a sum of positive squares in only one way, i.e., 56220004 + 1420864 = 7498^2 + 1192^2 .

It is not an unprimeable number, because it can be changed into a prime (57640861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7205105 + ... + 7205112.

It is an arithmetic number, because the mean of its divisors is an integer number (16811921).

Almost surely, 2^57640868 is an apocalyptic number.

It is an amenable number.

57640868 is a deficient number, since it is larger than the sum of its proper divisors (43230658).

57640868 is a wasteful number, since it uses less digits than its factorization.

57640868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14410221 (or 14410219 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 57640868 is about 7592.1583229013. The cubic root of 57640868 is about 386.2870693328.

The spelling of 57640868 in words is "fifty-seven million, six hundred forty thousand, eight hundred sixty-eight".