13605289 has 2 divisors, whose sum is σ = 13605290. Its totient is φ = 13605288.

The previous prime is 13605281. The next prime is 13605299. The reversal of 13605289 is 98250631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11108889 + 2496400 = 3333^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 13605289 - 2³ = 13605281 is a prime.

It is not a weakly prime, because it can be changed into another prime (13605281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6802644 + 6802645.

It is an arithmetic number, because the mean of its divisors is an integer number (6802645).

Almost surely, 2^13605289 is an apocalyptic number.

It is an amenable number.

13605289 is a deficient number, since it is larger than the sum of its proper divisors (1).

13605289 is an equidigital number, since it uses as much as digits as its factorization.

13605289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 13605289 is about 3688.5348039567. The cubic root of 13605289 is about 238.7275771820.

The spelling of 13605289 in words is "thirteen million, six hundred five thousand, two hundred eighty-nine".