676906189 has 2 divisors, whose sum is σ = 676906190. Its totient is φ = 676906188.

The previous prime is 676906163. The next prime is 676906193. The reversal of 676906189 is 981609676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405216900 + 271689289 = 20130^2 + 16483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676906189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676906199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338453094 + 338453095.

It is an arithmetic number, because the mean of its divisors is an integer number (338453095).

Almost surely, 2^676906189 is an apocalyptic number.

It is an amenable number.

676906189 is a deficient number, since it is larger than the sum of its proper divisors (1).

676906189 is an equidigital number, since it uses as much as digits as its factorization.

676906189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 676906189 is about 26017.4208752520. The cubic root of 676906189 is about 878.0302832352.

The spelling of 676906189 in words is "six hundred seventy-six million, nine hundred six thousand, one hundred eighty-nine".