99689648 has 20 divisors (see below), whose sum is σ = 194310480. Its totient is φ = 49545024.

The previous prime is 99689641. The next prime is 99689651. The reversal of 99689648 is 84698699.

It is not an unprimeable number, because it can be changed into a prime (99689641) 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, 15983 + ... + 21326.

It is an arithmetic number, because the mean of its divisors is an integer number (9715524).

Almost surely, 2^99689648 is an apocalyptic number.

It is an amenable number.

99689648 is a deficient number, since it is larger than the sum of its proper divisors (94620832).

99689648 is a wasteful number, since it uses less digits than its factorization.

99689648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37484 (or 37478 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 59.

The square root of 99689648 is about 9984.4703414853. The cubic root of 99689648 is about 463.6782102991.

The spelling of 99689648 in words is "ninety-nine million, six hundred eighty-nine thousand, six hundred forty-eight".