13886765 has 4 divisors (see below), whose sum is σ = 16664124. Its totient is φ = 11109408.

The previous prime is 13886723. The next prime is 13886783. The reversal of 13886765 is 56768831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9572836 + 4313929 = 3094^2 + 2077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13886765 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1388672 + ... + 1388681.

It is an arithmetic number, because the mean of its divisors is an integer number (4166031).

Almost surely, 2^13886765 is an apocalyptic number.

It is an amenable number.

13886765 is a deficient number, since it is larger than the sum of its proper divisors (2777359).

13886765 is an equidigital number, since it uses as much as digits as its factorization.

13886765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777358.

The product of its digits is 241920, while the sum is 44.

The square root of 13886765 is about 3726.4950020093. The cubic root of 13886765 is about 240.3626750486.

The spelling of 13886765 in words is "thirteen million, eight hundred eighty-six thousand, seven hundred sixty-five".