99996687 has 24 divisors (see below), whose sum is σ = 171190656. Its totient is φ = 57139992.

The previous prime is 99996679. The next prime is 99996691. The reversal of 99996687 is 78669999.

It is not a de Polignac number, because 99996687 - 2³ = 99996679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99996647) 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, 27693 + ... + 31094.

It is an arithmetic number, because the mean of its divisors is an integer number (7132944).

Almost surely, 2^99996687 is an apocalyptic number.

99996687 is a deficient number, since it is larger than the sum of its proper divisors (71193969).

99996687 is an equidigital number, since it uses as much as digits as its factorization.

99996687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58809 (or 58797 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 63.

The square root of 99996687 is about 9999.8343486280. The cubic root of 99996687 is about 464.1537574434.

The spelling of 99996687 in words is "ninety-nine million, nine hundred ninety-six thousand, six hundred eighty-seven".