115580865 has 64 divisors (see below), whose sum is σ = 203046912. Its totient is φ = 55968000.

The previous prime is 115580851. The next prime is 115580869. The reversal of 115580865 is 568085511.

It is not a de Polignac number, because 115580865 - 2⁵ = 115580833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115580869) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1080142 + ... + 1080248.

It is an arithmetic number, because the mean of its divisors is an integer number (3172608).

Almost surely, 2^115580865 is an apocalyptic number.

115580865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115580865 is a deficient number, since it is larger than the sum of its proper divisors (87466047).

115580865 is a wasteful number, since it uses less digits than its factorization.

115580865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270.

The product of its (nonzero) digits is 48000, while the sum is 39.

The square root of 115580865 is about 10750.8541521128. The cubic root of 115580865 is about 487.1117961432. Note that the first 3 decimals are identical.

The spelling of 115580865 in words is "one hundred fifteen million, five hundred eighty thousand, eight hundred sixty-five".