99115560 has 48 divisors (see below), whose sum is σ = 322126740. Its totient is φ = 26430720.

The previous prime is 99115547. The next prime is 99115619. The reversal of 99115560 is 6551199.

99115560 is a `hidden beast` number, since 9 + 91 + 1 + 5 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 96471684 + 2643876 = 9822^2 + 1626^2 .

It is a super-2 number, since 2×99115560² = 19647788468227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137301 + ... + 138020.

Almost surely, 2^99115560 is an apocalyptic number.

99115560 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99115560 is an abundant number, since it is smaller than the sum of its proper divisors (223011180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99115560 is a wasteful number, since it uses less digits than its factorization.

99115560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275338 (or 275331 counting only the distinct ones).

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

The square root of 99115560 is about 9955.6797859312. The cubic root of 99115560 is about 462.7864269128.

The spelling of 99115560 in words is "ninety-nine million, one hundred fifteen thousand, five hundred sixty".