6681672973 has 2 divisors, whose sum is σ = 6681672974. Its totient is φ = 6681672972.

The previous prime is 6681672857. The next prime is 6681673093. The reversal of 6681672973 is 3792761866.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6483792484 + 197880489 = 80522^2 + 14067^2 .

It is a cyclic number.

It is not a de Polignac number, because 6681672973 - 2²¹ = 6679575821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6681676973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340836486 + 3340836487.

It is an arithmetic number, because the mean of its divisors is an integer number (3340836487).

Almost surely, 2^6681672973 is an apocalyptic number.

It is an amenable number.

6681672973 is a deficient number, since it is larger than the sum of its proper divisors (1).

6681672973 is an equidigital number, since it uses as much as digits as its factorization.

6681672973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 55.

The square root of 6681672973 is about 81741.5009221142. The cubic root of 6681672973 is about 1883.4831470212.

The spelling of 6681672973 in words is "six billion, six hundred eighty-one million, six hundred seventy-two thousand, nine hundred seventy-three".