13508603 has 2 divisors, whose sum is σ = 13508604. Its totient is φ = 13508602.

The previous prime is 13508597. The next prime is 13508617. The reversal of 13508603 is 30680531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13508603 - 2¹⁰ = 13507579 is a prime.

It is equal to p₈₈₀₁₅₄ and since 13508603 and 880154 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13508623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6754301 + 6754302.

It is an arithmetic number, because the mean of its divisors is an integer number (6754302).

Almost surely, 2^13508603 is an apocalyptic number.

13508603 is a deficient number, since it is larger than the sum of its proper divisors (1).

13508603 is an equidigital number, since it uses as much as digits as its factorization.

13508603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 13508603 is about 3675.4051477354. The cubic root of 13508603 is about 238.1607263559.

The spelling of 13508603 in words is "thirteen million, five hundred eight thousand, six hundred three".