6865722077 has 2 divisors, whose sum is σ = 6865722078. Its totient is φ = 6865722076.

The previous prime is 6865722053. The next prime is 6865722079. The reversal of 6865722077 is 7702275686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6811861156 + 53860921 = 82534^2 + 7339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6865722077 is a prime.

Together with 6865722079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6865722079) 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, 3432861038 + 3432861039.

It is an arithmetic number, because the mean of its divisors is an integer number (3432861039).

Almost surely, 2^6865722077 is an apocalyptic number.

It is an amenable number.

6865722077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6865722077 is an equidigital number, since it uses as much as digits as its factorization.

6865722077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The square root of 6865722077 is about 82859.6528896905. The cubic root of 6865722077 is about 1900.6204877408.

The spelling of 6865722077 in words is "six billion, eight hundred sixty-five million, seven hundred twenty-two thousand, seventy-seven".