57643660 has 12 divisors (see below), whose sum is σ = 121051728. Its totient is φ = 23057456.

The previous prime is 57643643. The next prime is 57643661. The reversal of 57643660 is 6634675.

It is not an unprimeable number, because it can be changed into a prime (57643661) 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, 1441072 + ... + 1441111.

It is an arithmetic number, because the mean of its divisors is an integer number (10087644).

Almost surely, 2^57643660 is an apocalyptic number.

It is an amenable number.

57643660 is an abundant number, since it is smaller than the sum of its proper divisors (63408068).

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

57643660 is a wasteful number, since it uses less digits than its factorization.

57643660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882192 (or 2882190 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 57643660 is about 7592.3421946064. The cubic root of 57643660 is about 386.2933062045.

The spelling of 57643660 in words is "fifty-seven million, six hundred forty-three thousand, six hundred sixty".