99687600 has 90 divisors (see below), whose sum is σ = 345956156. Its totient is φ = 26582400.

The previous prime is 99687571. The next prime is 99687613. The reversal of 99687600 is 678699.

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10246 + ... + 17445.

Almost surely, 2^99687600 is an apocalyptic number.

99687600 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99687600 is an abundant number, since it is smaller than the sum of its proper divisors (246268556).

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

99687600 is a wasteful number, since it uses less digits than its factorization.

99687600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27715 (or 27701 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 99687600 is about 9984.3677816875. The cubic root of 99687600 is about 463.6750350464.

The spelling of 99687600 in words is "ninety-nine million, six hundred eighty-seven thousand, six hundred".