99988668 has 144 divisors (see below), whose sum is σ = 290655456. Its totient is φ = 29859840.

The previous prime is 99988649. The next prime is 99988753. The reversal of 99988668 is 86688999.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517980 + ... + 518172.

Almost surely, 2^99988668 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 99988668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145327728).

99988668 is an abundant number, since it is smaller than the sum of its proper divisors (190666788).

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

99988668 is a wasteful number, since it uses less digits than its factorization.

99988668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 252 counting only the distinct ones).

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

The square root of 99988668 is about 9999.4333839473. The cubic root of 99988668 is about 464.1413498707.

The spelling of 99988668 in words is "ninety-nine million, nine hundred eighty-eight thousand, six hundred sixty-eight".