115685679 has 4 divisors (see below), whose sum is σ = 154247576. Its totient is φ = 77123784.

The previous prime is 115685651. The next prime is 115685681. The reversal of 115685679 is 976586511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976586511 = 3 ⋅325528837.

It is not a de Polignac number, because 115685679 - 2¹³ = 115677487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115685639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19280944 + ... + 19280949.

It is an arithmetic number, because the mean of its divisors is an integer number (38561894).

Almost surely, 2^115685679 is an apocalyptic number.

115685679 is a deficient number, since it is larger than the sum of its proper divisors (38561897).

115685679 is an equidigital number, since it uses as much as digits as its factorization.

115685679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38561896.

The product of its digits is 453600, while the sum is 48.

The square root of 115685679 is about 10755.7277299121. The cubic root of 115685679 is about 487.2589967207.

The spelling of 115685679 in words is "one hundred fifteen million, six hundred eighty-five thousand, six hundred seventy-nine".