13604533 has 2 divisors, whose sum is σ = 13604534. Its totient is φ = 13604532.

The previous prime is 13604531. The next prime is 13604587. The reversal of 13604533 is 33540631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10284849 + 3319684 = 3207^2 + 1822^2 .

It is a cyclic number.

It is not a de Polignac number, because 13604533 - 2¹ = 13604531 is a prime.

Together with 13604531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13604498 and 13604507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13604531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6802266 + 6802267.

It is an arithmetic number, because the mean of its divisors is an integer number (6802267).

Almost surely, 2^13604533 is an apocalyptic number.

It is an amenable number.

13604533 is a deficient number, since it is larger than the sum of its proper divisors (1).

13604533 is an equidigital number, since it uses as much as digits as its factorization.

13604533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 13604533 is about 3688.4323228168. The cubic root of 13604533 is about 238.7231553381.

The spelling of 13604533 in words is "thirteen million, six hundred four thousand, five hundred thirty-three".