13061565 has 24 divisors (see below), whose sum is σ = 24699168. Its totient is φ = 6332640.

The previous prime is 13061561. The next prime is 13061599. The reversal of 13061565 is 56516031.

It is a happy number.

It is not a de Polignac number, because 13061565 - 2² = 13061561 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13061561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12699 + ... + 13688.

It is an arithmetic number, because the mean of its divisors is an integer number (1029132).

Almost surely, 2^13061565 is an apocalyptic number.

13061565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13061565 is a deficient number, since it is larger than the sum of its proper divisors (11637603).

13061565 is a wasteful number, since it uses less digits than its factorization.

13061565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26409 (or 26406 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 13061565 is about 3614.0787207807. The cubic root of 13061565 is about 235.5040636512.

Adding to 13061565 its reverse (56516031), we get a palindrome (69577596).

The spelling of 13061565 in words is "thirteen million, sixty-one thousand, five hundred sixty-five".