117718866 has 32 divisors (see below), whose sum is σ = 265510080. Its totient is φ = 38652768.

The previous prime is 117718847. The next prime is 117718871. The reversal of 117718866 is 668817711.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12651 + ... + 19886.

It is an arithmetic number, because the mean of its divisors is an integer number (8297190).

Almost surely, 2^117718866 is an apocalyptic number.

117718866 is an abundant number, since it is smaller than the sum of its proper divisors (147791214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117718866 is a wasteful number, since it uses less digits than its factorization.

117718866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32615 (or 32609 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 117718866 is about 10849.8325332698. The cubic root of 117718866 is about 490.0969765022.

The spelling of 117718866 in words is "one hundred seventeen million, seven hundred eighteen thousand, eight hundred sixty-six".