57697405 has 12 divisors (see below), whose sum is σ = 73551060. Its totient is φ = 43441664.

The previous prime is 57697397. The next prime is 57697421. The reversal of 57697405 is 50479675.

It can be written as a sum of positive squares in 6 ways, for example, as 498436 + 57198969 = 706^2 + 7563^2 .

It is not a de Polignac number, because 57697405 - 2³ = 57697397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18520 + ... + 21409.

It is an arithmetic number, because the mean of its divisors is an integer number (6129255).

Almost surely, 2^57697405 is an apocalyptic number.

It is an amenable number.

57697405 is a deficient number, since it is larger than the sum of its proper divisors (15853655).

57697405 is a wasteful number, since it uses less digits than its factorization.

57697405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39968 (or 39951 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 57697405 is about 7595.8807915870. The cubic root of 57697405 is about 386.4133245187.

The spelling of 57697405 in words is "fifty-seven million, six hundred ninety-seven thousand, four hundred five".