13603361 has 2 divisors, whose sum is σ = 13603362. Its totient is φ = 13603360.

The previous prime is 13603357. The next prime is 13603363. The reversal of 13603361 is 16330631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9339136 + 4264225 = 3056^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 13603361 - 2² = 13603357 is a prime.

Together with 13603363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13603363) 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, 6801680 + 6801681.

It is an arithmetic number, because the mean of its divisors is an integer number (6801681).

Almost surely, 2^13603361 is an apocalyptic number.

It is an amenable number.

13603361 is a deficient number, since it is larger than the sum of its proper divisors (1).

13603361 is an equidigital number, since it uses as much as digits as its factorization.

13603361 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 23.

The square root of 13603361 is about 3688.2734443097. The cubic root of 13603361 is about 238.7162999865.

Adding to 13603361 its reverse (16330631), we get a palindrome (29933992).

The spelling of 13603361 in words is "thirteen million, six hundred three thousand, three hundred sixty-one".