13608965 has 4 divisors (see below), whose sum is σ = 16330764. Its totient is φ = 10887168.

The previous prime is 13608961. The next prime is 13608967. The reversal of 13608965 is 56980631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56980631 = 1049 ⋅54319.

It can be written as a sum of positive squares in 2 ways, for example, as 6880129 + 6728836 = 2623^2 + 2594^2 .

It is a cyclic number.

It is not a de Polignac number, because 13608965 - 2² = 13608961 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 (13608961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360892 + ... + 1360901.

It is an arithmetic number, because the mean of its divisors is an integer number (4082691).

Almost surely, 2^13608965 is an apocalyptic number.

It is an amenable number.

13608965 is a deficient number, since it is larger than the sum of its proper divisors (2721799).

13608965 is an equidigital number, since it uses as much as digits as its factorization.

13608965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721798.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 13608965 is about 3689.0330711448. The cubic root of 13608965 is about 238.7490757710.

The spelling of 13608965 in words is "thirteen million, six hundred eight thousand, nine hundred sixty-five".