99918668 has 12 divisors (see below), whose sum is σ = 176405880. Its totient is φ = 49516992.

The previous prime is 99918667. The next prime is 99918691. The reversal of 99918668 is 86681999.

It is not an unprimeable number, because it can be changed into a prime (99918667) 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, 110078 + ... + 110981.

It is an arithmetic number, because the mean of its divisors is an integer number (14700490).

Almost surely, 2^99918668 is an apocalyptic number.

It is an amenable number.

99918668 is a deficient number, since it is larger than the sum of its proper divisors (76487212).

99918668 is a wasteful number, since it uses less digits than its factorization.

99918668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221176 (or 221174 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 56.

The square root of 99918668 is about 9995.9325728018. The cubic root of 99918668 is about 464.0330126631.

The spelling of 99918668 in words is "ninety-nine million, nine hundred eighteen thousand, six hundred sixty-eight".