13598609 has 2 divisors, whose sum is σ = 13598610. Its totient is φ = 13598608.

The previous prime is 13598603. The next prime is 13598617. The reversal of 13598609 is 90689531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 494209 = 3620^2 + 703^2 .

It is an emirp because it is prime and its reverse (90689531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13598609 - 2⁸ = 13598353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13598603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6799304 + 6799305.

It is an arithmetic number, because the mean of its divisors is an integer number (6799305).

Almost surely, 2^13598609 is an apocalyptic number.

It is an amenable number.

13598609 is a deficient number, since it is larger than the sum of its proper divisors (1).

13598609 is an equidigital number, since it uses as much as digits as its factorization.

13598609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 13598609 is about 3687.6291841778. The cubic root of 13598609 is about 238.6885001907.

The spelling of 13598609 in words is "thirteen million, five hundred ninety-eight thousand, six hundred nine".