99680685 has 32 divisors (see below), whose sum is σ = 177690240. Its totient is φ = 47378688.

The previous prime is 99680671. The next prime is 99680753. The reversal of 99680685 is 58608699.

It is not a de Polignac number, because 99680685 - 2⁷ = 99680557 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 3159 + ... + 14468.

It is an arithmetic number, because the mean of its divisors is an integer number (5552820).

Almost surely, 2^99680685 is an apocalyptic number.

It is an amenable number.

99680685 is a deficient number, since it is larger than the sum of its proper divisors (78009555).

99680685 is a wasteful number, since it uses less digits than its factorization.

99680685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17677.

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 99680685 is about 9984.0214843519. The cubic root of 99680685 is about 463.6643135959.

The spelling of 99680685 in words is "ninety-nine million, six hundred eighty thousand, six hundred eighty-five".