13240817 has 2 divisors, whose sum is σ = 13240818. Its totient is φ = 13240816.

The previous prime is 13240771. The next prime is 13240837. The reversal of 13240817 is 71804231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6885376 + 6355441 = 2624^2 + 2521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13240817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13240837) 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, 6620408 + 6620409.

It is an arithmetic number, because the mean of its divisors is an integer number (6620409).

Almost surely, 2^13240817 is an apocalyptic number.

It is an amenable number.

13240817 is a deficient number, since it is larger than the sum of its proper divisors (1).

13240817 is an equidigital number, since it uses as much as digits as its factorization.

13240817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 13240817 is about 3638.7933439535. The cubic root of 13240817 is about 236.5764956583.

The spelling of 13240817 in words is "thirteen million, two hundred forty thousand, eight hundred seventeen".