99660288 has 320 divisors, whose sum is σ = 351977472. Its totient is φ = 24330240.

The previous prime is 99660271. The next prime is 99660293. The reversal of 99660288 is 88206699.

It is a Cunningham number, because it is equal to 9983²-1.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3214833 + ... + 3214863.

Almost surely, 2^99660288 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 99660288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175988736).

99660288 is an abundant number, since it is smaller than the sum of its proper divisors (252317184).

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

99660288 is a wasteful number, since it uses less digits than its factorization.

99660288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 99660288 is about 9982.9999499149. Note that the first 4 decimals coincide. The cubic root of 99660288 is about 463.6326859168.

The spelling of 99660288 in words is "ninety-nine million, six hundred sixty thousand, two hundred eighty-eight".