6706710721 has 2 divisors, whose sum is σ = 6706710722. Its totient is φ = 6706710720.

The previous prime is 6706710701. The next prime is 6706710727. The reversal of 6706710721 is 1270176076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4078610496 + 2628100225 = 63864^2 + 51265^2 .

It is a cyclic number.

It is not a de Polignac number, because 6706710721 - 2¹⁹ = 6706186433 is a prime.

It is not a weakly prime, because it can be changed into another prime (6706710727) 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, 3353355360 + 3353355361.

It is an arithmetic number, because the mean of its divisors is an integer number (3353355361).

Almost surely, 2^6706710721 is an apocalyptic number.

It is an amenable number.

6706710721 is a deficient number, since it is larger than the sum of its proper divisors (1).

6706710721 is an equidigital number, since it uses as much as digits as its factorization.

6706710721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 6706710721 is about 81894.5097121901. The cubic root of 6706710721 is about 1885.8328277459.

Adding to 6706710721 its reverse (1270176076), we get a palindrome (7976886797).

The spelling of 6706710721 in words is "six billion, seven hundred six million, seven hundred ten thousand, seven hundred twenty-one".