99517687 has 8 divisors (see below), whose sum is σ = 105557760. Its totient is φ = 93557880.

The previous prime is 99517669. The next prime is 99517703. The reversal of 99517687 is 78671599.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 99517687 - 2⁷ = 99517559 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 (99517637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17503 + ... + 22480.

It is an arithmetic number, because the mean of its divisors is an integer number (13194720).

Almost surely, 2^99517687 is an apocalyptic number.

99517687 is a deficient number, since it is larger than the sum of its proper divisors (6040073).

99517687 is a wasteful number, since it uses less digits than its factorization.

99517687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40133.

The product of its digits is 952560, while the sum is 52.

The square root of 99517687 is about 9975.8552014351. The cubic root of 99517687 is about 463.4114475318.

The spelling of 99517687 in words is "ninety-nine million, five hundred seventeen thousand, six hundred eighty-seven".