57720692 has 12 divisors (see below), whose sum is σ = 102012036. Its totient is φ = 28574400.

The previous prime is 57720679. The next prime is 57720737. The reversal of 57720692 is 29602775.

It can be written as a sum of positive squares in 2 ways, for example, as 53377636 + 4343056 = 7306^2 + 2084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71033 + ... + 71840.

It is an arithmetic number, because the mean of its divisors is an integer number (8501003).

Almost surely, 2^57720692 is an apocalyptic number.

It is an amenable number.

57720692 is a deficient number, since it is larger than the sum of its proper divisors (44291344).

57720692 is a wasteful number, since it uses less digits than its factorization.

57720692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142978 (or 142976 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 57720692 is about 7597.4135072405. The cubic root of 57720692 is about 386.4653037296.

The spelling of 57720692 in words is "fifty-seven million, seven hundred twenty thousand, six hundred ninety-two".