117665943 has 8 divisors (see below), whose sum is σ = 157001856. Its totient is φ = 78387000.

The previous prime is 117665939. The next prime is 117665969. The reversal of 117665943 is 349566711.

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

It is not a de Polignac number, because 117665943 - 2² = 117665939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117665895 and 117665904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117665543) 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 7 ways as a sum of consecutive naturals, for example, 9163 + ... + 17868.

It is an arithmetic number, because the mean of its divisors is an integer number (19625232).

Almost surely, 2^117665943 is an apocalyptic number.

117665943 is a deficient number, since it is larger than the sum of its proper divisors (39335913).

117665943 is a wasteful number, since it uses less digits than its factorization.

117665943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28485.

The product of its digits is 136080, while the sum is 42.

The square root of 117665943 is about 10847.3933735253. The cubic root of 117665943 is about 490.0235210145.

The spelling of 117665943 in words is "one hundred seventeen million, six hundred sixty-five thousand, nine hundred forty-three".