99688608 has 36 divisors (see below), whose sum is σ = 283490298. Its totient is φ = 33229440.

The previous prime is 99688607. The next prime is 99688613. The reversal of 99688608 is 80688699.

It can be written as a sum of positive squares in only one way, i.e., 98962704 + 725904 = 9948^2 + 852^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (99688607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172783 + ... + 173358.

Almost surely, 2^99688608 is an apocalyptic number.

It is an amenable number.

99688608 is an abundant number, since it is smaller than the sum of its proper divisors (183801690).

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

99688608 is a wasteful number, since it uses less digits than its factorization.

99688608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346157 (or 346146 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 99688608 is about 9984.4182604697. The cubic root of 99688608 is about 463.6765978715.

The spelling of 99688608 in words is "ninety-nine million, six hundred eighty-eight thousand, six hundred eight".