56685939 has 8 divisors (see below), whose sum is σ = 80027280. Its totient is φ = 35567616.

The previous prime is 56685917. The next prime is 56685983. The reversal of 56685939 is 93958665.

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

It is not a de Polignac number, because 56685939 - 2²⁰ = 55637363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 1111489 = 56685939 / (5 + 6 + 6 + 8 + 5 + 9 + 3 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 56685891 and 56685900.

It is not an unprimeable number, because it can be changed into a prime (56685989) 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, 555694 + ... + 555795.

It is an arithmetic number, because the mean of its divisors is an integer number (10003410).

Almost surely, 2^56685939 is an apocalyptic number.

56685939 is a deficient number, since it is larger than the sum of its proper divisors (23341341).

56685939 is a wasteful number, since it uses less digits than its factorization.

56685939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111509.

The product of its digits is 1749600, while the sum is 51.

The square root of 56685939 is about 7529.0065081656. The cubic root of 56685939 is about 384.1419898626.

The spelling of 56685939 in words is "fifty-six million, six hundred eighty-five thousand, nine hundred thirty-nine".