6726842197 has 2 divisors, whose sum is σ = 6726842198. Its totient is φ = 6726842196.

The previous prime is 6726842167. The next prime is 6726842209. The reversal of 6726842197 is 7912486276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6077917521 + 648924676 = 77961^2 + 25474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6726842197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6726842167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3363421098 + 3363421099.

It is an arithmetic number, because the mean of its divisors is an integer number (3363421099).

Almost surely, 2^6726842197 is an apocalyptic number.

It is an amenable number.

6726842197 is a deficient number, since it is larger than the sum of its proper divisors (1).

6726842197 is an equidigital number, since it uses as much as digits as its factorization.

6726842197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 6726842197 is about 82017.3286385261. The cubic root of 6726842197 is about 1887.7178389984.

The spelling of 6726842197 in words is "six billion, seven hundred twenty-six million, eight hundred forty-two thousand, one hundred ninety-seven".