13090565 has 16 divisors (see below), whose sum is σ = 16588800. Its totient is φ = 9896832.

The previous prime is 13090549. The next prime is 13090589. The reversal of 13090565 is 56509031.

It is a cyclic number.

It is not a de Polignac number, because 13090565 - 2⁴ = 13090549 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9596 + ... + 10874.

It is an arithmetic number, because the mean of its divisors is an integer number (1036800).

Almost surely, 2^13090565 is an apocalyptic number.

It is an amenable number.

13090565 is a deficient number, since it is larger than the sum of its proper divisors (3498235).

13090565 is a wasteful number, since it uses less digits than its factorization.

13090565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 13090565 is about 3618.0885837691. The cubic root of 13090565 is about 235.6782278134.

Adding to 13090565 its reverse (56509031), we get a palindrome (69599596).

The spelling of 13090565 in words is "thirteen million, ninety thousand, five hundred sixty-five".