13071689 has 2 divisors, whose sum is σ = 13071690. Its totient is φ = 13071688.

The previous prime is 13071683. The next prime is 13071731. The reversal of 13071689 is 98617031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12306064 + 765625 = 3508^2 + 875^2 .

It is a cyclic number.

It is not a de Polignac number, because 13071689 - 2⁴ = 13071673 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13071683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6535844 + 6535845.

It is an arithmetic number, because the mean of its divisors is an integer number (6535845).

Almost surely, 2^13071689 is an apocalyptic number.

It is an amenable number.

13071689 is a deficient number, since it is larger than the sum of its proper divisors (1).

13071689 is an equidigital number, since it uses as much as digits as its factorization.

13071689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 13071689 is about 3615.4790830539. The cubic root of 13071689 is about 235.5648942229.

The spelling of 13071689 in words is "thirteen million, seventy-one thousand, six hundred eighty-nine".