99868556 has 12 divisors (see below), whose sum is σ = 174840792. Its totient is φ = 49914048.

The previous prime is 99868519. The next prime is 99868567. The reversal of 99868556 is 65586899.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14171 + ... + 20013.

It is an arithmetic number, because the mean of its divisors is an integer number (14570066).

Almost surely, 2^99868556 is an apocalyptic number.

It is an amenable number.

99868556 is a deficient number, since it is larger than the sum of its proper divisors (74972236).

99868556 is a wasteful number, since it uses less digits than its factorization.

99868556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10120 (or 10118 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 56.

The square root of 99868556 is about 9993.4256388888. The cubic root of 99868556 is about 463.9554245229.

The spelling of 99868556 in words is "ninety-nine million, eight hundred sixty-eight thousand, five hundred fifty-six".