6547216717 has 2 divisors, whose sum is σ = 6547216718. Its totient is φ = 6547216716.

The previous prime is 6547216691. The next prime is 6547216721. The reversal of 6547216717 is 7176127456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4837063401 + 1710153316 = 69549^2 + 41354^2 .

It is a cyclic number.

It is not a de Polignac number, because 6547216717 - 2⁷ = 6547216589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6547216747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273608358 + 3273608359.

It is an arithmetic number, because the mean of its divisors is an integer number (3273608359).

Almost surely, 2^6547216717 is an apocalyptic number.

It is an amenable number.

6547216717 is a deficient number, since it is larger than the sum of its proper divisors (1).

6547216717 is an equidigital number, since it uses as much as digits as its factorization.

6547216717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 46.

The square root of 6547216717 is about 80914.8732743245. The cubic root of 6547216717 is about 1870.7635758962.

The spelling of 6547216717 in words is "six billion, five hundred forty-seven million, two hundred sixteen thousand, seven hundred seventeen".