13299623 has 4 divisors (see below), whose sum is σ = 13306920. Its totient is φ = 13292328.

The previous prime is 13299619. The next prime is 13299641. The reversal of 13299623 is 32699231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32699231 = 37 ⋅883763.

It is a cyclic number.

It is not a de Polignac number, because 13299623 - 2² = 13299619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13299653) 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, 1688 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (3326730).

Almost surely, 2^13299623 is an apocalyptic number.

13299623 is a deficient number, since it is larger than the sum of its proper divisors (7297).

13299623 is an equidigital number, since it uses as much as digits as its factorization.

13299623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7296.

The product of its digits is 17496, while the sum is 35.

The square root of 13299623 is about 3646.8648178950. The cubic root of 13299623 is about 236.9262115473.

The spelling of 13299623 in words is "thirteen million, two hundred ninety-nine thousand, six hundred twenty-three".