676722256289 has 2 divisors, whose sum is σ = 676722256290. Its totient is φ = 676722256288.

The previous prime is 676722256277. The next prime is 676722256403. The reversal of 676722256289 is 982652227676.

It is a happy number.

676722256289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518709646225 + 158012610064 = 720215^2 + 397508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676722256289 is a prime.

It is not a weakly prime, because it can be changed into another prime (676722256489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338361128144 + 338361128145.

It is an arithmetic number, because the mean of its divisors is an integer number (338361128145).

Almost surely, 2^676722256289 is an apocalyptic number.

It is an amenable number.

676722256289 is a deficient number, since it is larger than the sum of its proper divisors (1).

676722256289 is an equidigital number, since it uses as much as digits as its factorization.

676722256289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 62.

The spelling of 676722256289 in words is "six hundred seventy-six billion, seven hundred twenty-two million, two hundred fifty-six thousand, two hundred eighty-nine".