13616563 has 2 divisors, whose sum is σ = 13616564. Its totient is φ = 13616562.

The previous prime is 13616549. The next prime is 13616587. The reversal of 13616563 is 36561631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13616563 - 2¹⁷ = 13485491 is a prime.

It is not a weakly prime, because it can be changed into another prime (13616503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6808281 + 6808282.

It is an arithmetic number, because the mean of its divisors is an integer number (6808282).

Almost surely, 2^13616563 is an apocalyptic number.

13616563 is a deficient number, since it is larger than the sum of its proper divisors (1).

13616563 is an equidigital number, since it uses as much as digits as its factorization.

13616563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 31.

The square root of 13616563 is about 3690.0627365941. The cubic root of 13616563 is about 238.7934993793.

The spelling of 13616563 in words is "thirteen million, six hundred sixteen thousand, five hundred sixty-three".