6981477673 has 2 divisors, whose sum is σ = 6981477674. Its totient is φ = 6981477672.

The previous prime is 6981477647. The next prime is 6981477689. The reversal of 6981477673 is 3767741896.

6981477673 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5466088489 + 1515389184 = 73933^2 + 38928^2 .

It is a cyclic number.

It is not a de Polignac number, because 6981477673 - 2⁹ = 6981477161 is a prime.

It is not a weakly prime, because it can be changed into another prime (6981474673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3490738836 + 3490738837.

It is an arithmetic number, because the mean of its divisors is an integer number (3490738837).

Almost surely, 2^6981477673 is an apocalyptic number.

It is an amenable number.

6981477673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6981477673 is an equidigital number, since it uses as much as digits as its factorization.

6981477673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 58.

The square root of 6981477673 is about 83555.2372565598. The cubic root of 6981477673 is about 1911.2424573230.

The spelling of 6981477673 in words is "six billion, nine hundred eighty-one million, four hundred seventy-seven thousand, six hundred seventy-three".