117813717 has 16 divisors (see below), whose sum is σ = 199473280. Its totient is φ = 67322016.

The previous prime is 117813713. The next prime is 117813719. The reversal of 117813717 is 717318711.

It is not a de Polignac number, because 117813717 - 2² = 117813713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117813713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311488 + ... + 311865.

It is an arithmetic number, because the mean of its divisors is an integer number (12467080).

Almost surely, 2^117813717 is an apocalyptic number.

It is an amenable number.

117813717 is a deficient number, since it is larger than the sum of its proper divisors (81659563).

117813717 is an equidigital number, since it uses as much as digits as its factorization.

117813717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623369 (or 623363 counting only the distinct ones).

The product of its digits is 8232, while the sum is 36.

The square root of 117813717 is about 10854.2027344250. The cubic root of 117813717 is about 490.2285716894.

The spelling of 117813717 in words is "one hundred seventeen million, eight hundred thirteen thousand, seven hundred seventeen".