13662017 has 2 divisors, whose sum is σ = 13662018. Its totient is φ = 13662016.

The previous prime is 13662013. The next prime is 13662031. The reversal of 13662017 is 71026631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7230721 + 6431296 = 2689^2 + 2536^2 .

It is a cyclic number.

It is not a de Polignac number, because 13662017 - 2² = 13662013 is a prime.

It is not a weakly prime, because it can be changed into another prime (13662013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6831008 + 6831009.

It is an arithmetic number, because the mean of its divisors is an integer number (6831009).

Almost surely, 2^13662017 is an apocalyptic number.

It is an amenable number.

13662017 is a deficient number, since it is larger than the sum of its proper divisors (1).

13662017 is an equidigital number, since it uses as much as digits as its factorization.

13662017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13662017 is about 3696.2165791523. The cubic root of 13662017 is about 239.0589130167.

Adding to 13662017 its reverse (71026631), we get a palindrome (84688648).

The spelling of 13662017 in words is "thirteen million, six hundred sixty-two thousand, seventeen".