117685685 has 12 divisors (see below), whose sum is σ = 152922852. Its totient is φ = 86905728.

The previous prime is 117685663. The next prime is 117685699. The reversal of 117685685 is 586586711.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1196836 + 116488849 = 1094^2 + 10793^2 .

It is not a de Polignac number, because 117685685 - 2⁸ = 117685429 is a prime.

It is a Duffinian number.

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, 68792 + ... + 70481.

It is an arithmetic number, because the mean of its divisors is an integer number (12743571).

Almost surely, 2^117685685 is an apocalyptic number.

It is an amenable number.

117685685 is a deficient number, since it is larger than the sum of its proper divisors (35237167).

117685685 is a wasteful number, since it uses less digits than its factorization.

117685685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139304 (or 139291 counting only the distinct ones).

The product of its digits is 403200, while the sum is 47.

The square root of 117685685 is about 10848.3033235617. The cubic root of 117685685 is about 490.0509248753.

The spelling of 117685685 in words is "one hundred seventeen million, six hundred eighty-five thousand, six hundred eighty-five".