676749109 has 2 divisors, whose sum is σ = 676749110. Its totient is φ = 676749108.

The previous prime is 676749097. The next prime is 676749113. The reversal of 676749109 is 901947676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654234084 + 22515025 = 25578^2 + 4745^2 .

It is a cyclic number.

It is not a de Polignac number, because 676749109 - 2⁵ = 676749077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676749119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338374554 + 338374555.

It is an arithmetic number, because the mean of its divisors is an integer number (338374555).

Almost surely, 2^676749109 is an apocalyptic number.

It is an amenable number.

676749109 is a deficient number, since it is larger than the sum of its proper divisors (1).

676749109 is an equidigital number, since it uses as much as digits as its factorization.

676749109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 676749109 is about 26014.4019535334. The cubic root of 676749109 is about 877.9623606441.

The spelling of 676749109 in words is "six hundred seventy-six million, seven hundred forty-nine thousand, one hundred nine".