99608640 has 224 divisors, whose sum is σ = 343326720. Its totient is φ = 24385536.

The previous prime is 99608633. The next prime is 99608657. The reversal of 99608640 is 4680699.

It is a junction number, because it is equal to n+sod(n) for n = 99608592 and 99608601.

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, 784257 + ... + 784383.

Almost surely, 2^99608640 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 99608640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171663360).

99608640 is an abundant number, since it is smaller than the sum of its proper divisors (243718080).

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

99608640 is a wasteful number, since it uses less digits than its factorization.

99608640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 99608640 is about 9980.4128171133. The cubic root of 99608640 is about 463.5525809951.

The spelling of 99608640 in words is "ninety-nine million, six hundred eight thousand, six hundred forty".