57685 has 8 divisors (see below), whose sum is σ = 70560. Its totient is φ = 45264.

The previous prime is 57679. The next prime is 57689. The reversal of 57685 is 58675.

57685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57685 - 2⁵ = 57653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346 + ... + 484.

It is an arithmetic number, because the mean of its divisors is an integer number (8820).

2⁵⁷⁶⁸⁵ is an apocalyptic number.

57685 is the 139-th octagonal number.

It is an amenable number.

57685 is a deficient number, since it is larger than the sum of its proper divisors (12875).

57685 is a wasteful number, since it uses less digits than its factorization.

57685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227.

The product of its digits is 8400, while the sum is 31.

The square root of 57685 is about 240.1770180513. The cubic root of 57685 is about 38.6385629450.

Subtracting 57685 from its reverse (58675), we obtain a triangular number (990 = T₄₄).

The spelling of 57685 in words is "fifty-seven thousand, six hundred eighty-five".