13563673 has 2 divisors, whose sum is σ = 13563674. Its totient is φ = 13563672.

The previous prime is 13563653. The next prime is 13563679. The reversal of 13563673 is 37636531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13483584 + 80089 = 3672^2 + 283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13563673 is a prime.

It is not a weakly prime, because it can be changed into another prime (13563679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6781836 + 6781837.

It is an arithmetic number, because the mean of its divisors is an integer number (6781837).

Almost surely, 2^13563673 is an apocalyptic number.

It is an amenable number.

13563673 is a deficient number, since it is larger than the sum of its proper divisors (1).

13563673 is an equidigital number, since it uses as much as digits as its factorization.

13563673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 34.

The square root of 13563673 is about 3682.8892190779. The cubic root of 13563673 is about 238.4839211120.

The spelling of 13563673 in words is "thirteen million, five hundred sixty-three thousand, six hundred seventy-three".