99965718 has 16 divisors (see below), whose sum is σ = 222146160. Its totient is φ = 33321888.

The previous prime is 99965683. The next prime is 99965737. The reversal of 99965718 is 81756999.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1851217 = 99965718 / (9 + 9 + 9 + 6 + 5 + 7 + 1 + 8).

It is a Curzon number.

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, 925555 + ... + 925662.

It is an arithmetic number, because the mean of its divisors is an integer number (13884135).

Almost surely, 2^99965718 is an apocalyptic number.

99965718 is an abundant number, since it is smaller than the sum of its proper divisors (122180442).

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

99965718 is a wasteful number, since it uses less digits than its factorization.

99965718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851228 (or 1851222 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 99965718 is about 9998.2857530679. The cubic root of 99965718 is about 464.1058363162.

The spelling of 99965718 in words is "ninety-nine million, nine hundred sixty-five thousand, seven hundred eighteen".