676708289 has 2 divisors, whose sum is σ = 676708290. Its totient is φ = 676708288.

The previous prime is 676708267. The next prime is 676708309. The reversal of 676708289 is 982807676.

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., 416853889 + 259854400 = 20417^2 + 16120^2 .

It is a cyclic number.

It is not a de Polignac number, because 676708289 - 2⁸ = 676708033 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 676708289.

It is not a weakly prime, because it can be changed into another prime (676708259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338354144 + 338354145.

It is an arithmetic number, because the mean of its divisors is an integer number (338354145).

Almost surely, 2^676708289 is an apocalyptic number.

It is an amenable number.

676708289 is a deficient number, since it is larger than the sum of its proper divisors (1).

676708289 is an equidigital number, since it uses as much as digits as its factorization.

676708289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 676708289 is about 26013.6173762897. The cubic root of 676708289 is about 877.9447080441.

The spelling of 676708289 in words is "six hundred seventy-six million, seven hundred eight thousand, two hundred eighty-nine".