13487563 has 2 divisors, whose sum is σ = 13487564. Its totient is φ = 13487562.

The previous prime is 13487561. The next prime is 13487597. The reversal of 13487563 is 36578431.

13487563 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13487563 - 2¹ = 13487561 is a prime.

Together with 13487561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13487561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6743781 + 6743782.

It is an arithmetic number, because the mean of its divisors is an integer number (6743782).

Almost surely, 2^13487563 is an apocalyptic number.

13487563 is a deficient number, since it is larger than the sum of its proper divisors (1).

13487563 is an equidigital number, since it uses as much as digits as its factorization.

13487563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 13487563 is about 3672.5417628667. The cubic root of 13487563 is about 238.0370149336.

It can be divided in two parts, 1348 and 7563, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 13487563 in words is "thirteen million, four hundred eighty-seven thousand, five hundred sixty-three".