99606915 has 32 divisors (see below), whose sum is σ = 179284800. Its totient is φ = 53117856.

The previous prime is 99606883. The next prime is 99606971. The reversal of 99606915 is 51960699.

It is not a de Polignac number, because 99606915 - 2⁵ = 99606883 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6381 + ... + 15489.

It is an arithmetic number, because the mean of its divisors is an integer number (5602650).

Almost surely, 2^99606915 is an apocalyptic number.

99606915 is a deficient number, since it is larger than the sum of its proper divisors (79677885).

99606915 is an frugal number, since it uses more digits than its factorization.

99606915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9135 (or 9117 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 99606915 is about 9980.3263974682. The cubic root of 99606915 is about 463.5499050799.

The spelling of 99606915 in words is "ninety-nine million, six hundred six thousand, nine hundred fifteen".