13966565 has 8 divisors (see below), whose sum is σ = 16888608. Its totient is φ = 11087440.

The previous prime is 13966553. The next prime is 13966573. The reversal of 13966565 is 56566931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13966565 - 2¹² = 13962469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10007 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (2111076).

Almost surely, 2^13966565 is an apocalyptic number.

It is an amenable number.

13966565 is a deficient number, since it is larger than the sum of its proper divisors (2922043).

13966565 is a wasteful number, since it uses less digits than its factorization.

13966565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21459.

The product of its digits is 145800, while the sum is 41.

The square root of 13966565 is about 3737.1867761727. The cubic root of 13966565 is about 240.8222089371.

The spelling of 13966565 in words is "thirteen million, nine hundred sixty-six thousand, five hundred sixty-five".