99648775 has 6 divisors (see below), whose sum is σ = 123564512. Its totient is φ = 79719000.

The previous prime is 99648767. The next prime is 99648793. The reversal of 99648775 is 57784699.

It is not a de Polignac number, because 99648775 - 2³ = 99648767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1992951 + ... + 1993000.

Almost surely, 2^99648775 is an apocalyptic number.

99648775 is a deficient number, since it is larger than the sum of its proper divisors (23915737).

99648775 is a wasteful number, since it uses less digits than its factorization.

99648775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985961 (or 3985956 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The square root of 99648775 is about 9982.4233029861. The cubic root of 99648775 is about 463.6148319023.

The spelling of 99648775 in words is "ninety-nine million, six hundred forty-eight thousand, seven hundred seventy-five".