13982665 has 8 divisors (see below), whose sum is σ = 16800840. Its totient is φ = 11171712.

The previous prime is 13982659. The next prime is 13982677. The reversal of 13982665 is 56628931.

It can be written as a sum of positive squares in 4 ways, for example, as 84681 + 13897984 = 291^2 + 3728^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13982665 - 2⁹ = 13982153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4407 + ... + 6883.

It is an arithmetic number, because the mean of its divisors is an integer number (2100105).

Almost surely, 2^13982665 is an apocalyptic number.

It is an amenable number.

13982665 is a deficient number, since it is larger than the sum of its proper divisors (2818175).

13982665 is a wasteful number, since it uses less digits than its factorization.

13982665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611.

The product of its digits is 77760, while the sum is 40.

The square root of 13982665 is about 3739.3401824386. The cubic root of 13982665 is about 240.9147095791.

The spelling of 13982665 in words is "thirteen million, nine hundred eighty-two thousand, six hundred sixty-five".