6681310673 has 2 divisors, whose sum is σ = 6681310674. Its totient is φ = 6681310672.

The previous prime is 6681310633. The next prime is 6681310703. The reversal of 6681310673 is 3760131866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5864036929 + 817273744 = 76577^2 + 28588^2 .

It is a cyclic number.

It is not a de Polignac number, because 6681310673 - 2²⁰ = 6680262097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6681310673.

It is not a weakly prime, because it can be changed into another prime (6681310633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340655336 + 3340655337.

It is an arithmetic number, because the mean of its divisors is an integer number (3340655337).

Almost surely, 2^6681310673 is an apocalyptic number.

It is an amenable number.

6681310673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6681310673 is an equidigital number, since it uses as much as digits as its factorization.

6681310673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 6681310673 is about 81739.2847595329. The cubic root of 6681310673 is about 1883.4491037369.

The spelling of 6681310673 in words is "six billion, six hundred eighty-one million, three hundred ten thousand, six hundred seventy-three".