99507680 has 24 divisors (see below), whose sum is σ = 235087272. Its totient is φ = 39803008.

The previous prime is 99507649. The next prime is 99507721. The reversal of 99507680 is 8670599.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310802 + ... + 311121.

It is an arithmetic number, because the mean of its divisors is an integer number (9795303).

Almost surely, 2^99507680 is an apocalyptic number.

It is an amenable number.

99507680 is an abundant number, since it is smaller than the sum of its proper divisors (135579592).

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

99507680 is a wasteful number, since it uses less digits than its factorization.

99507680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621938 (or 621930 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 99507680 is about 9975.3536278169. The cubic root of 99507680 is about 463.3959142333.

The spelling of 99507680 in words is "ninety-nine million, five hundred seven thousand, six hundred eighty".