13613765 has 16 divisors (see below), whose sum is σ = 17971200. Its totient is φ = 9817920.

The previous prime is 13613741. The next prime is 13613767. The reversal of 13613765 is 56731631.

It is not a de Polignac number, because 13613765 - 2⁶ = 13613701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13613767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6011 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (1123200).

Almost surely, 2^13613765 is an apocalyptic number.

It is an amenable number.

13613765 is a deficient number, since it is larger than the sum of its proper divisors (4357435).

13613765 is a wasteful number, since it uses less digits than its factorization.

13613765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092.

The product of its digits is 11340, while the sum is 32.

The square root of 13613765 is about 3689.6835907704. The cubic root of 13613765 is about 238.7771420949. Note that the first 3 decimals are identical.

The spelling of 13613765 in words is "thirteen million, six hundred thirteen thousand, seven hundred sixty-five".