6683981797 has 2 divisors, whose sum is σ = 6683981798. Its totient is φ = 6683981796.

The previous prime is 6683981743. The next prime is 6683981803. The reversal of 6683981797 is 7971893866.

6683981797 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., 5397253156 + 1286728641 = 73466^2 + 35871^2 .

It is a cyclic number.

It is not a de Polignac number, because 6683981797 - 2¹⁹ = 6683457509 is a prime.

It is a super-2 number, since 2×6683981797² = 89351225325254698418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6683981197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3341990898 + 3341990899.

It is an arithmetic number, because the mean of its divisors is an integer number (3341990899).

Almost surely, 2^6683981797 is an apocalyptic number.

It is an amenable number.

6683981797 is a deficient number, since it is larger than the sum of its proper divisors (1).

6683981797 is an equidigital number, since it uses as much as digits as its factorization.

6683981797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27433728, while the sum is 64.

The square root of 6683981797 is about 81755.6224182778. The cubic root of 6683981797 is about 1883.7000652652.

The spelling of 6683981797 in words is "six billion, six hundred eighty-three million, nine hundred eighty-one thousand, seven hundred ninety-seven".