117638085 has 16 divisors (see below), whose sum is σ = 189889344. Its totient is φ = 62184192.

The previous prime is 117638071. The next prime is 117638107. The reversal of 117638085 is 580836711.

It is not a de Polignac number, because 117638085 - 2⁹ = 117637573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33007 + ... + 36396.

It is an arithmetic number, because the mean of its divisors is an integer number (11868084).

Almost surely, 2^117638085 is an apocalyptic number.

117638085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117638085 is a deficient number, since it is larger than the sum of its proper divisors (72251259).

117638085 is a wasteful number, since it uses less digits than its factorization.

117638085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69524.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 117638085 is about 10846.1092102191. The cubic root of 117638085 is about 489.9848461230.

The spelling of 117638085 in words is "one hundred seventeen million, six hundred thirty-eight thousand, eighty-five".