56671685 has 24 divisors (see below), whose sum is σ = 79535520. Its totient is φ = 38651424.

The previous prime is 56671673. The next prime is 56671687. The reversal of 56671685 is 58617665.

It is not a de Polignac number, because 56671685 - 2⁴ = 56671669 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56671687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55106 + ... + 56124.

It is an arithmetic number, because the mean of its divisors is an integer number (3313980).

Almost surely, 2^56671685 is an apocalyptic number.

It is an amenable number.

56671685 is a deficient number, since it is larger than the sum of its proper divisors (22863835).

56671685 is a wasteful number, since it uses less digits than its factorization.

56671685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1258 counting only the distinct ones).

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

The square root of 56671685 is about 7528.0598430140. The cubic root of 56671685 is about 384.1097889380.

The spelling of 56671685 in words is "fifty-six million, six hundred seventy-one thousand, six hundred eighty-five".