99698688 has 120 divisors (see below), whose sum is σ = 298287990. Its totient is φ = 33177600.

The previous prime is 99698653. The next prime is 99698699. The reversal of 99698688 is 88689699.

It can be written as a sum of positive squares in only one way, i.e., 69755904 + 29942784 = 8352^2 + 5472^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 165588 + ... + 166188.

Almost surely, 2^99698688 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 99698688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149143995).

99698688 is an abundant number, since it is smaller than the sum of its proper divisors (198589302).

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

99698688 is an equidigital number, since it uses as much as digits as its factorization.

99698688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 606 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 63.

The square root of 99698688 is about 9984.9230342552. The cubic root of 99698688 is about 463.6922255434.

The spelling of 99698688 in words is "ninety-nine million, six hundred ninety-eight thousand, six hundred eighty-eight".