99623669 has 8 divisors (see below), whose sum is σ = 105023040. Its totient is φ = 94239936.

The previous prime is 99623659. The next prime is 99623681. The reversal of 99623669 is 96632699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99623669 - 2⁴ = 99623653 is a prime.

It is a super-2 number, since 2×99623669² = 19849750850043122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99623659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10589 + ... + 17645.

It is an arithmetic number, because the mean of its divisors is an integer number (13127880).

Almost surely, 2^99623669 is an apocalyptic number.

It is an amenable number.

99623669 is a deficient number, since it is larger than the sum of its proper divisors (5399371).

99623669 is a wasteful number, since it uses less digits than its factorization.

99623669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7819.

The product of its digits is 944784, while the sum is 50.

The square root of 99623669 is about 9981.1657134826. The cubic root of 99623669 is about 463.5758935022.

It can be divided in two parts, 9962 and 3669, that added together give a palindrome (13631).

The spelling of 99623669 in words is "ninety-nine million, six hundred twenty-three thousand, six hundred sixty-nine".