99623668 has 6 divisors (see below), whose sum is σ = 174341426. Its totient is φ = 49811832.

The previous prime is 99623659. The next prime is 99623681. The reversal of 99623668 is 86632699.

It can be written as a sum of positive squares in only one way, i.e., 52591504 + 47032164 = 7252^2 + 6858^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12452955 + ... + 12452962.

Almost surely, 2^99623668 is an apocalyptic number.

It is an amenable number.

99623668 is a deficient number, since it is larger than the sum of its proper divisors (74717758).

99623668 is a wasteful number, since it uses less digits than its factorization.

99623668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24905921 (or 24905919 counting only the distinct ones).

The product of its digits is 839808, while the sum is 49.

The square root of 99623668 is about 9981.1656633882. The cubic root of 99623668 is about 463.5758919511.

The spelling of 99623668 in words is "ninety-nine million, six hundred twenty-three thousand, six hundred sixty-eight".