99556656 has 80 divisors (see below), whose sum is σ = 272720640. Its totient is φ = 31207680.

The previous prime is 99556643. The next prime is 99556657. The reversal of 99556656 is 65665599.

It is a junction number, because it is equal to n+sod(n) for n = 99556599 and 99556608.

It is not an unprimeable number, because it can be changed into a prime (99556657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157461 + ... + 158091.

It is an arithmetic number, because the mean of its divisors is an integer number (3409008).

Almost surely, 2^99556656 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 99556656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136360320).

99556656 is an abundant number, since it is smaller than the sum of its proper divisors (173163984).

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

99556656 is a wasteful number, since it uses less digits than its factorization.

99556656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 828 counting only the distinct ones).

The product of its digits is 2187000, while the sum is 51.

The square root of 99556656 is about 9977.8081761477. The cubic root of 99556656 is about 463.4719269790.

The spelling of 99556656 in words is "ninety-nine million, five hundred fifty-six thousand, six hundred fifty-six".