99818624 has 32 divisors (see below), whose sum is σ = 199427340. Its totient is φ = 49766400.

The previous prime is 99818623. The next prime is 99818629. The reversal of 99818624 is 42681899.

It can be written as a sum of positive squares in 2 ways, for example, as 82446400 + 17372224 = 9080^2 + 4168^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (99818623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54524 + ... + 56324.

Almost surely, 2^99818624 is an apocalyptic number.

It is an amenable number.

99818624 is a deficient number, since it is larger than the sum of its proper divisors (99608716).

99818624 is a wasteful number, since it uses less digits than its factorization.

99818624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248 (or 2236 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 99818624 is about 9990.9270841099. The cubic root of 99818624 is about 463.8780892563.

The spelling of 99818624 in words is "ninety-nine million, eight hundred eighteen thousand, six hundred twenty-four".