676726909 has 2 divisors, whose sum is σ = 676726910. Its totient is φ = 676726908.

The previous prime is 676726903. The next prime is 676726951. The reversal of 676726909 is 909627676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475370809 + 201356100 = 21803^2 + 14190^2 .

It is a cyclic number.

It is not a de Polignac number, because 676726909 - 2¹³ = 676718717 is a prime.

It is a super-3 number, since 3×676726909³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676726903) 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, 338363454 + 338363455.

It is an arithmetic number, because the mean of its divisors is an integer number (338363455).

Almost surely, 2^676726909 is an apocalyptic number.

It is an amenable number.

676726909 is a deficient number, since it is larger than the sum of its proper divisors (1).

676726909 is an equidigital number, since it uses as much as digits as its factorization.

676726909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 676726909 is about 26013.9752633080. The cubic root of 676726909 is about 877.9527603470.

The spelling of 676726909 in words is "six hundred seventy-six million, seven hundred twenty-six thousand, nine hundred nine".