13505671 has 2 divisors, whose sum is σ = 13505672. Its totient is φ = 13505670.

The previous prime is 13505663. The next prime is 13505717. The reversal of 13505671 is 17650531.

13505671 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13505671 - 2³ = 13505663 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 (13505641) 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, 6752835 + 6752836.

It is an arithmetic number, because the mean of its divisors is an integer number (6752836).

Almost surely, 2^13505671 is an apocalyptic number.

13505671 is a deficient number, since it is larger than the sum of its proper divisors (1).

13505671 is an equidigital number, since it uses as much as digits as its factorization.

13505671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 13505671 is about 3675.0062584981. The cubic root of 13505671 is about 238.1434944291.

It can be divided in two parts, 1350 and 5671, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 13505671 in words is "thirteen million, five hundred five thousand, six hundred seventy-one".