115986685 has 4 divisors (see below), whose sum is σ = 139184028. Its totient is φ = 92789344.

The previous prime is 115986679. The next prime is 115986709. The reversal of 115986685 is 586689511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586689511 = 151 ⋅3885361.

It can be written as a sum of positive squares in 2 ways, for example, as 91642329 + 24344356 = 9573^2 + 4934^2 .

It is a cyclic number.

It is not a de Polignac number, because 115986685 - 2⁵ = 115986653 is a prime.

It is a super-2 number, since 2×115986685² = 26905822194578450, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 11598664 + ... + 11598673.

It is an arithmetic number, because the mean of its divisors is an integer number (34796007).

Almost surely, 2^115986685 is an apocalyptic number.

It is an amenable number.

115986685 is a deficient number, since it is larger than the sum of its proper divisors (23197343).

115986685 is an equidigital number, since it uses as much as digits as its factorization.

115986685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23197342.

The product of its digits is 518400, while the sum is 49.

The square root of 115986685 is about 10769.7114631730. The cubic root of 115986685 is about 487.6812352665.

The spelling of 115986685 in words is "one hundred fifteen million, nine hundred eighty-six thousand, six hundred eighty-five".