13136565 has 64 divisors (see below), whose sum is σ = 24675840. Its totient is φ = 5913600.

The previous prime is 13136561. The next prime is 13136567. The reversal of 13136565 is 56563131.

13136565 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13136565 - 2² = 13136561 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13136561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130015 + ... + 130115.

It is an arithmetic number, because the mean of its divisors is an integer number (385560).

Almost surely, 2^13136565 is an apocalyptic number.

13136565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13136565 is a deficient number, since it is larger than the sum of its proper divisors (11539275).

13136565 is a wasteful number, since it uses less digits than its factorization.

13136565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174.

The product of its digits is 8100, while the sum is 30.

The square root of 13136565 is about 3624.4399567381. The cubic root of 13136565 is about 235.9539613823.

Adding to 13136565 its reverse (56563131), we get a palindrome (69699696).

The spelling of 13136565 in words is "thirteen million, one hundred thirty-six thousand, five hundred sixty-five".