13345565 has 8 divisors (see below), whose sum is σ = 16035000. Its totient is φ = 10662912.

The previous prime is 13345513. The next prime is 13345571. The reversal of 13345565 is 56554331.

It can be written as a sum of positive squares in 4 ways, for example, as 1156 + 13344409 = 34^2 + 3653^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13345565 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5177 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (2004375).

Almost surely, 2^13345565 is an apocalyptic number.

It is an amenable number.

13345565 is a deficient number, since it is larger than the sum of its proper divisors (2689435).

13345565 is a wasteful number, since it uses less digits than its factorization.

13345565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391.

The product of its digits is 27000, while the sum is 32.

The square root of 13345565 is about 3653.1582226890. The cubic root of 13345565 is about 237.1987093594.

Adding to 13345565 its reverse (56554331), we get a palindrome (69899896).

The spelling of 13345565 in words is "thirteen million, three hundred forty-five thousand, five hundred sixty-five".