117885805 has 16 divisors (see below), whose sum is σ = 143155584. Its totient is φ = 93188160.

The previous prime is 117885793. The next prime is 117885829. The reversal of 117885805 is 508588711.

It is a happy number.

It is not a de Polignac number, because 117885805 - 2²¹ = 115788653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206170 + ... + 206740.

It is an arithmetic number, because the mean of its divisors is an integer number (8947224).

Almost surely, 2^117885805 is an apocalyptic number.

It is an amenable number.

117885805 is a deficient number, since it is larger than the sum of its proper divisors (25269779).

117885805 is a wasteful number, since it uses less digits than its factorization.

117885805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 89600, while the sum is 43.

The square root of 117885805 is about 10857.5229679702. The cubic root of 117885805 is about 490.3285385205.

The spelling of 117885805 in words is "one hundred seventeen million, eight hundred eighty-five thousand, eight hundred five".