115990065 has 96 divisors (see below), whose sum is σ = 226077696. Its totient is φ = 54743040.

The previous prime is 115990057. The next prime is 115990067. The reversal of 115990065 is 560099511.

115990065 is a `hidden beast` number, since 1 + 1 + 599 + 0 + 0 + 65 = 666.

It is not a de Polignac number, because 115990065 - 2³ = 115990057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115990067) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1588869 + ... + 1588941.

It is an arithmetic number, because the mean of its divisors is an integer number (2354976).

Almost surely, 2^115990065 is an apocalyptic number.

115990065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115990065 is a deficient number, since it is larger than the sum of its proper divisors (110087631).

115990065 is a wasteful number, since it uses less digits than its factorization.

115990065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 115990065 is about 10769.8683835969. The cubic root of 115990065 is about 487.6859724384.

The spelling of 115990065 in words is "one hundred fifteen million, nine hundred ninety thousand, sixty-five".