13663253 has 2 divisors, whose sum is σ = 13663254. Its totient is φ = 13663252.

The previous prime is 13663231. The next prime is 13663267. The reversal of 13663253 is 35236631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13410244 + 253009 = 3662^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 13663253 - 2²⁰ = 12614677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13663753) 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, 6831626 + 6831627.

It is an arithmetic number, because the mean of its divisors is an integer number (6831627).

Almost surely, 2^13663253 is an apocalyptic number.

It is an amenable number.

13663253 is a deficient number, since it is larger than the sum of its proper divisors (1).

13663253 is an equidigital number, since it uses as much as digits as its factorization.

13663253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 29.

The square root of 13663253 is about 3696.3837733655. The cubic root of 13663253 is about 239.0661220036.

Adding to 13663253 its reverse (35236631), we get a palindrome (48899884).

The spelling of 13663253 in words is "thirteen million, six hundred sixty-three thousand, two hundred fifty-three".