99612618 has 16 divisors (see below), whose sum is σ = 227686080. Its totient is φ = 28460736.

The previous prime is 99612589. The next prime is 99612629. The reversal of 99612618 is 81621699.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 2371729 = 99612618 / (9 + 9 + 6 + 1 + 2 + 6 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 99612618.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185823 + ... + 1185906.

It is an arithmetic number, because the mean of its divisors is an integer number (14230380).

Almost surely, 2^99612618 is an apocalyptic number.

99612618 is an abundant number, since it is smaller than the sum of its proper divisors (128073462).

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

99612618 is a wasteful number, since it uses less digits than its factorization.

99612618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371741.

The product of its digits is 46656, while the sum is 42.

The square root of 99612618 is about 9980.6121054773. The cubic root of 99612618 is about 463.5587517704.

The spelling of 99612618 in words is "ninety-nine million, six hundred twelve thousand, six hundred eighteen".