99866015 has 8 divisors (see below), whose sum is σ = 121283568. Its totient is φ = 78929920.

The previous prime is 99865999. The next prime is 99866017. The reversal of 99866015 is 51066899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99866015 - 2⁴ = 99865999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99866017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119906 + ... + 120735.

It is an arithmetic number, because the mean of its divisors is an integer number (15160446).

Almost surely, 2^99866015 is an apocalyptic number.

99866015 is a deficient number, since it is larger than the sum of its proper divisors (21417553).

99866015 is a wasteful number, since it uses less digits than its factorization.

99866015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240729.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 99866015 is about 9993.2985044979. The cubic root of 99866015 is about 463.9514896149.

The spelling of 99866015 in words is "ninety-nine million, eight hundred sixty-six thousand, fifteen".