676722256489 has 2 divisors, whose sum is σ = 676722256490. Its totient is φ = 676722256488.

The previous prime is 676722256471. The next prime is 676722256499. The reversal of 676722256489 is 984652227676.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617651384464 + 59070872025 = 785908^2 + 243045^2 .

It is a cyclic number.

It is not a de Polignac number, because 676722256489 - 2¹⁵ = 676722223721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 676722256489.

It is not a weakly prime, because it can be changed into another prime (676722256439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338361128244 + 338361128245.

It is an arithmetic number, because the mean of its divisors is an integer number (338361128245).

Almost surely, 2^676722256489 is an apocalyptic number.

It is an amenable number.

676722256489 is a deficient number, since it is larger than the sum of its proper divisors (1).

676722256489 is an equidigital number, since it uses as much as digits as its factorization.

676722256489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121927680, while the sum is 64.

The spelling of 676722256489 in words is "six hundred seventy-six billion, seven hundred twenty-two million, two hundred fifty-six thousand, four hundred eighty-nine".