99680907 has 4 divisors (see below), whose sum is σ = 132907880. Its totient is φ = 66453936.

The previous prime is 99680899. The next prime is 99680927. The reversal of 99680907 is 70908699.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70908699 = 3 ⋅23636233.

It is not a de Polignac number, because 99680907 - 2³ = 99680899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99680927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16613482 + ... + 16613487.

It is an arithmetic number, because the mean of its divisors is an integer number (33226970).

Almost surely, 2^99680907 is an apocalyptic number.

99680907 is a deficient number, since it is larger than the sum of its proper divisors (33226973).

99680907 is a wasteful number, since it uses less digits than its factorization.

99680907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33226972.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 99680907 is about 9984.0326021102. The cubic root of 99680907 is about 463.6646578063.

The spelling of 99680907 in words is "ninety-nine million, six hundred eighty thousand, nine hundred seven".