13340689 has 2 divisors, whose sum is σ = 13340690. Its totient is φ = 13340688.

The previous prime is 13340681. The next prime is 13340711. The reversal of 13340689 is 98604331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 380689 = 3600^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 13340689 - 2³ = 13340681 is a prime.

It is not a weakly prime, because it can be changed into another prime (13340681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6670344 + 6670345.

It is an arithmetic number, because the mean of its divisors is an integer number (6670345).

Almost surely, 2^13340689 is an apocalyptic number.

It is an amenable number.

13340689 is a deficient number, since it is larger than the sum of its proper divisors (1).

13340689 is an equidigital number, since it uses as much as digits as its factorization.

13340689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 13340689 is about 3652.4907939651. The cubic root of 13340689 is about 237.1698178190.

The spelling of 13340689 in words is "thirteen million, three hundred forty thousand, six hundred eighty-nine".