99966618 has 24 divisors (see below), whose sum is σ = 217054656. Its totient is φ = 33251400.

The previous prime is 99966589. The next prime is 99966631. The reversal of 99966618 is 81666999.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3183 + ... + 14493.

It is an arithmetic number, because the mean of its divisors is an integer number (9043944).

Almost surely, 2^99966618 is an apocalyptic number.

99966618 is an abundant number, since it is smaller than the sum of its proper divisors (117088038).

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

99966618 is a wasteful number, since it uses less digits than its factorization.

99966618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11810 (or 11807 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 99966618 is about 9998.3307606820. The cubic root of 99966618 is about 464.1072291070.

The spelling of 99966618 in words is "ninety-nine million, nine hundred sixty-six thousand, six hundred eighteen".