99999718 has 16 divisors (see below), whose sum is σ = 184615200. Its totient is φ = 39560256.

The previous prime is 99999703. The next prime is 99999721. The reversal of 99999718 is 81799999.

It is a congruent number.

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, 274543 + ... + 274906.

It is an arithmetic number, because the mean of its divisors is an integer number (11538450).

Almost surely, 2^99999718 is an apocalyptic number.

99999718 is a deficient number, since it is larger than the sum of its proper divisors (84615482).

99999718 is a wasteful number, since it uses less digits than its factorization.

99999718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549471.

The product of its digits is 3306744, while the sum is 61.

The square root of 99999718 is about 9999.9858999901. The cubic root of 99999718 is about 464.1584470515.

The spelling of 99999718 in words is "ninety-nine million, nine hundred ninety-nine thousand, seven hundred eighteen".