117961685 has 16 divisors (see below), whose sum is σ = 145544256. Its totient is φ = 91730688.

The previous prime is 117961673. The next prime is 117961777. The reversal of 117961685 is 586169711.

It is a cyclic number.

It is not a de Polignac number, because 117961685 - 2⁶ = 117961621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47597 + ... + 50013.

It is an arithmetic number, because the mean of its divisors is an integer number (9096516).

Almost surely, 2^117961685 is an apocalyptic number.

It is an amenable number.

117961685 is a deficient number, since it is larger than the sum of its proper divisors (27582571).

117961685 is a wasteful number, since it uses less digits than its factorization.

117961685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692.

The product of its digits is 90720, while the sum is 44.

The square root of 117961685 is about 10861.0167571918. The cubic root of 117961685 is about 490.4337198285.

The spelling of 117961685 in words is "one hundred seventeen million, nine hundred sixty-one thousand, six hundred eighty-five".