13606009 has 2 divisors, whose sum is σ = 13606010. Its totient is φ = 13606008.

The previous prime is 13606007. The next prime is 13606037. The reversal of 13606009 is 90060631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13249600 + 356409 = 3640^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 13606009 - 2¹ = 13606007 is a prime.

Together with 13606007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13606003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6803004 + 6803005.

It is an arithmetic number, because the mean of its divisors is an integer number (6803005).

Almost surely, 2^13606009 is an apocalyptic number.

It is an amenable number.

13606009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13606009 is an equidigital number, since it uses as much as digits as its factorization.

13606009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 13606009 is about 3688.6324023952. The cubic root of 13606009 is about 238.7317883096.

The spelling of 13606009 in words is "thirteen million, six hundred six thousand, nine".