99915684 has 48 divisors (see below), whose sum is σ = 257839680. Its totient is φ = 29859840.

The previous prime is 99915679. The next prime is 99915691. The reversal of 99915684 is 48651999.

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, 4452 + ... + 14820.

It is an arithmetic number, because the mean of its divisors is an integer number (5371660).

Almost surely, 2^99915684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99915684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128919840).

99915684 is an abundant number, since it is smaller than the sum of its proper divisors (157923996).

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

99915684 is a wasteful number, since it uses less digits than its factorization.

99915684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10460 (or 10458 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 99915684 is about 9995.7833109767. The cubic root of 99915684 is about 464.0283932784.

The spelling of 99915684 in words is "ninety-nine million, nine hundred fifteen thousand, six hundred eighty-four".