13308565 has 8 divisors (see below), whose sum is σ = 16271928. Its totient is φ = 10445760.

The previous prime is 13308541. The next prime is 13308583. The reversal of 13308565 is 56580331.

13308565 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 734449 + 12574116 = 857^2 + 3546^2 .

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

It is not a de Polignac number, because 13308565 - 2¹⁵ = 13275797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24846 + ... + 25375.

It is an arithmetic number, because the mean of its divisors is an integer number (2033991).

Almost surely, 2^13308565 is an apocalyptic number.

It is an amenable number.

13308565 is a deficient number, since it is larger than the sum of its proper divisors (2963363).

13308565 is an equidigital number, since it uses as much as digits as its factorization.

13308565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50279.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 13308565 is about 3648.0905964628. The cubic root of 13308565 is about 236.9792987550.

Adding to 13308565 its reverse (56580331), we get a palindrome (69888896).

The spelling of 13308565 in words is "thirteen million, three hundred eight thousand, five hundred sixty-five".