99618624 has 168 divisors, whose sum is σ = 337279488. Its totient is φ = 27509760.

The previous prime is 99618619. The next prime is 99618661. The reversal of 99618624 is 42681699.

It is a happy number.

99618624 is a `hidden beast` number, since 9 + 9 + 6 + 18 + 624 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 99618624.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124594 + ... + 125390.

It is an arithmetic number, because the mean of its divisors is an integer number (2007616).

Almost surely, 2^99618624 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 99618624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168639744).

99618624 is an abundant number, since it is smaller than the sum of its proper divisors (237660864).

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

99618624 is a wasteful number, since it uses less digits than its factorization.

99618624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 840 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 99618624 is about 9980.9129842916. The cubic root of 99618624 is about 463.5680681200.

The spelling of 99618624 in words is "ninety-nine million, six hundred eighteen thousand, six hundred twenty-four".