13716665 has 16 divisors (see below), whose sum is σ = 16920576. Its totient is φ = 10670400.

The previous prime is 13716649. The next prime is 13716667. The reversal of 13716665 is 56661731.

It is a happy number.

13716665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13716665 - 2⁴ = 13716649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13716667) 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, 50480 + ... + 50750.

It is an arithmetic number, because the mean of its divisors is an integer number (1057536).

Almost surely, 2^13716665 is an apocalyptic number.

It is an amenable number.

13716665 is a deficient number, since it is larger than the sum of its proper divisors (3203911).

13716665 is a wasteful number, since it uses less digits than its factorization.

13716665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520.

The product of its digits is 22680, while the sum is 35.

The square root of 13716665 is about 3703.6016254452. The cubic root of 13716665 is about 239.3772337867.

The spelling of 13716665 in words is "thirteen million, seven hundred sixteen thousand, six hundred sixty-five".