57685661 has 12 divisors (see below), whose sum is σ = 64886976. Its totient is φ = 51217320.

The previous prime is 57685651. The next prime is 57685673. The reversal of 57685661 is 16658675.

It is not a de Polignac number, because 57685661 - 2⁶ = 57685597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57685651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341 + ... + 10746.

It is an arithmetic number, because the mean of its divisors is an integer number (5407248).

Almost surely, 2^57685661 is an apocalyptic number.

It is an amenable number.

57685661 is a deficient number, since it is larger than the sum of its proper divisors (7201315).

57685661 is a wasteful number, since it uses less digits than its factorization.

57685661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152 (or 11141 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 57685661 is about 7595.1077016722. The cubic root of 57685661 is about 386.3871052805.

The spelling of 57685661 in words is "fifty-seven million, six hundred eighty-five thousand, six hundred sixty-one".