13806965 has 4 divisors (see below), whose sum is σ = 16568364. Its totient is φ = 11045568.

The previous prime is 13806953. The next prime is 13806971. The reversal of 13806965 is 56960831.

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 8708401 + 5098564 = 2951^2 + 2258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13806965 is a prime.

It is a super-2 number, since 2×13806965² = 381264565022450, which contains 22 as substring.

It is a Duffinian 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, 1380692 + ... + 1380701.

It is an arithmetic number, because the mean of its divisors is an integer number (4142091).

Almost surely, 2^13806965 is an apocalyptic number.

It is an amenable number.

13806965 is a deficient number, since it is larger than the sum of its proper divisors (2761399).

13806965 is an equidigital number, since it uses as much as digits as its factorization.

13806965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761398.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 13806965 is about 3715.7724634321. The cubic root of 13806965 is about 239.9013773028.

The spelling of 13806965 in words is "thirteen million, eight hundred six thousand, nine hundred sixty-five".