115865715 has 16 divisors (see below), whose sum is σ = 211868928. Its totient is φ = 52967136.

The previous prime is 115865707. The next prime is 115865749. The reversal of 115865715 is 517568511.

It is not a de Polignac number, because 115865715 - 2³ = 115865707 is a prime.

It is a super-2 number, since 2×115865715² = 26849727824922450, which contains 22 as substring.

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, 551637 + ... + 551846.

It is an arithmetic number, because the mean of its divisors is an integer number (13241808).

Almost surely, 2^115865715 is an apocalyptic number.

115865715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115865715 is a deficient number, since it is larger than the sum of its proper divisors (96003213).

115865715 is a wasteful number, since it uses less digits than its factorization.

115865715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103498.

The product of its digits is 42000, while the sum is 39.

The square root of 115865715 is about 10764.0937844298. The cubic root of 115865715 is about 487.5116315436.

The spelling of 115865715 in words is "one hundred fifteen million, eight hundred sixty-five thousand, seven hundred fifteen".