99659807 has 24 divisors (see below), whose sum is σ = 116519760. Its totient is φ = 84913920.

The previous prime is 99659783. The next prime is 99659809. The reversal of 99659807 is 70895699.

It is not a de Polignac number, because 99659807 - 2⁸ = 99659551 is a prime.

It is a super-5 number, since 5×99659807⁵ (a number of 41 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99659809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131273 + ... + 132029.

It is an arithmetic number, because the mean of its divisors is an integer number (4854990).

Almost surely, 2^99659807 is an apocalyptic number.

99659807 is a deficient number, since it is larger than the sum of its proper divisors (16859953).

99659807 is a wasteful number, since it uses less digits than its factorization.

99659807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 99659807 is about 9982.9758589310. The cubic root of 99659807 is about 463.6319400240.

The spelling of 99659807 in words is "ninety-nine million, six hundred fifty-nine thousand, eight hundred seven".