99618 has 8 divisors (see below), whose sum is σ = 199248. Its totient is φ = 33204.

The previous prime is 99611. The next prime is 99623. The reversal of 99618 is 81699.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

99618 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (99611) 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, 8296 + ... + 8307.

It is an arithmetic number, because the mean of its divisors is an integer number (24906).

2⁹⁹⁶¹⁸ is an apocalyptic number.

99618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99624).

99618 is a wasteful number, since it uses less digits than its factorization.

99618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16608.

The product of its digits is 3888, while the sum is 33.

The square root of 99618 is about 315.6231930641. The cubic root of 99618 is about 46.3567100205.

It can be divided in two parts, 99 and 618, that added together give a palindrome (717).

The spelling of 99618 in words is "ninety-nine thousand, six hundred eighteen".