13976565 has 16 divisors (see below), whose sum is σ = 22967808. Its totient is φ = 7252416.

The previous prime is 13976561. The next prime is 13976587. The reversal of 13976565 is 56567931.

It is a happy number.

It is not a de Polignac number, because 13976565 - 2² = 13976561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13976561) 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, 12037 + ... + 13146.

It is an arithmetic number, because the mean of its divisors is an integer number (1435488).

Almost surely, 2^13976565 is an apocalyptic number.

13976565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13976565 is a deficient number, since it is larger than the sum of its proper divisors (8991243).

13976565 is a wasteful number, since it uses less digits than its factorization.

13976565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25228.

The product of its digits is 170100, while the sum is 42.

The square root of 13976565 is about 3738.5244415411. The cubic root of 13976565 is about 240.8796711110.

It can be divided in two parts, 13976 and 565, that added together give a palindrome (14541).

The spelling of 13976565 in words is "thirteen million, nine hundred seventy-six thousand, five hundred sixty-five".