6606216317 has 2 divisors, whose sum is σ = 6606216318. Its totient is φ = 6606216316.

The previous prime is 6606216299. The next prime is 6606216329. The reversal of 6606216317 is 7136126066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5181984196 + 1424232121 = 71986^2 + 37739^2 .

It is a cyclic number.

It is not a de Polignac number, because 6606216317 - 2²⁰ = 6605167741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6606212317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303108158 + 3303108159.

It is an arithmetic number, because the mean of its divisors is an integer number (3303108159).

Almost surely, 2^6606216317 is an apocalyptic number.

It is an amenable number.

6606216317 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606216317 is an equidigital number, since it uses as much as digits as its factorization.

6606216317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 6606216317 is about 81278.6338283315. The cubic root of 6606216317 is about 1876.3661810409.

The spelling of 6606216317 in words is "six billion, six hundred six million, two hundred sixteen thousand, three hundred seventeen".