117688907 has 32 divisors (see below), whose sum is σ = 149913600. Its totient is φ = 90069408.

The previous prime is 117688903. The next prime is 117688913. The reversal of 117688907 is 709886711.

It is a cyclic number.

It is not a de Polignac number, because 117688907 - 2² = 117688903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117688903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241418 + ... + 241904.

It is an arithmetic number, because the mean of its divisors is an integer number (4684800).

Almost surely, 2^117688907 is an apocalyptic number.

117688907 is a deficient number, since it is larger than the sum of its proper divisors (32224693).

117688907 is a wasteful number, since it uses less digits than its factorization.

117688907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615.

The product of its (nonzero) digits is 169344, while the sum is 47.

The square root of 117688907 is about 10848.4518250302. The cubic root of 117688907 is about 490.0553970410.

The spelling of 117688907 in words is "one hundred seventeen million, six hundred eighty-eight thousand, nine hundred seven".