99689612 has 24 divisors (see below), whose sum is σ = 192462480. Its totient is φ = 44802560.

The previous prime is 99689593. The next prime is 99689621. The reversal of 99689612 is 21698699.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8813 + ... + 16644.

It is an arithmetic number, because the mean of its divisors is an integer number (8019270).

Almost surely, 2^99689612 is an apocalyptic number.

It is an amenable number.

99689612 is a deficient number, since it is larger than the sum of its proper divisors (92772868).

99689612 is a wasteful number, since it uses less digits than its factorization.

99689612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25561 (or 25559 counting only the distinct ones).

The product of its digits is 419904, while the sum is 50.

The square root of 99689612 is about 9984.4685386855. The cubic root of 99689612 is about 463.6781544845.

The spelling of 99689612 in words is "ninety-nine million, six hundred eighty-nine thousand, six hundred twelve".