117805865 has 8 divisors (see below), whose sum is σ = 141618048. Its totient is φ = 94077360.

The previous prime is 117805843. The next prime is 117805873. The reversal of 117805865 is 568508711.

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

It is a de Polignac number, because none of the positive numbers 2^k-117805865 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17777 + ... + 23486.

It is an arithmetic number, because the mean of its divisors is an integer number (17702256).

Almost surely, 2^117805865 is an apocalyptic number.

It is an amenable number.

117805865 is a deficient number, since it is larger than the sum of its proper divisors (23812183).

117805865 is an equidigital number, since it uses as much as digits as its factorization.

117805865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41839.

The product of its (nonzero) digits is 67200, while the sum is 41.

The square root of 117805865 is about 10853.8410251855. The cubic root of 117805865 is about 490.2176805969.

The spelling of 117805865 in words is "one hundred seventeen million, eight hundred five thousand, eight hundred sixty-five".