13205671 has 2 divisors, whose sum is σ = 13205672. Its totient is φ = 13205670.

The previous prime is 13205669. The next prime is 13205681. The reversal of 13205671 is 17650231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13205671 - 2¹ = 13205669 is a prime.

Together with 13205669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13205681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6602835 + 6602836.

It is an arithmetic number, because the mean of its divisors is an integer number (6602836).

Almost surely, 2^13205671 is an apocalyptic number.

13205671 is a deficient number, since it is larger than the sum of its proper divisors (1).

13205671 is an equidigital number, since it uses as much as digits as its factorization.

13205671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 13205671 is about 3633.9607868000. The cubic root of 13205671 is about 236.3669898260.

The spelling of 13205671 in words is "thirteen million, two hundred five thousand, six hundred seventy-one".