99615 has 16 divisors (see below), whose sum is σ = 165600. Its totient is φ = 51072.

The previous prime is 99611. The next prime is 99623. The reversal of 99615 is 51699.

It is not a de Polignac number, because 99615 - 2² = 99611 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99615.

It is not an unprimeable number, because it can be changed into a prime (99611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321 + ... + 549.

It is an arithmetic number, because the mean of its divisors is an integer number (10350).

2⁹⁹⁶¹⁵ is an apocalyptic number.

99615 is a deficient number, since it is larger than the sum of its proper divisors (65985).

99615 is a wasteful number, since it uses less digits than its factorization.

99615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266.

The product of its digits is 2430, while the sum is 30.

The square root of 99615 is about 315.6184405259. The cubic root of 99615 is about 46.3562446711.

The spelling of 99615 in words is "ninety-nine thousand, six hundred fifteen".