13663009 has 2 divisors, whose sum is σ = 13663010. Its totient is φ = 13663008.

The previous prime is 13662983. The next prime is 13663037. The reversal of 13663009 is 90036631.

It is an a-pointer prime, because the next prime (13663037) can be obtained adding 13663009 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7006609 + 6656400 = 2647^2 + 2580^2 .

It is a cyclic number.

It is not a de Polignac number, because 13663009 - 2¹¹ = 13660961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13663099) 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, 6831504 + 6831505.

It is an arithmetic number, because the mean of its divisors is an integer number (6831505).

Almost surely, 2^13663009 is an apocalyptic number.

It is an amenable number.

13663009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13663009 is an equidigital number, since it uses as much as digits as its factorization.

13663009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 13663009 is about 3696.3507679873. The cubic root of 13663009 is about 239.0646989047.

The spelling of 13663009 in words is "thirteen million, six hundred sixty-three thousand, nine".