676909 has 2 divisors, whose sum is σ = 676910. Its totient is φ = 676908.

The previous prime is 676903. The next prime is 676919. The reversal of 676909 is 909676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 1225 = 822^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 676909 - 2¹⁵ = 644141 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338454 + 338455.

It is an arithmetic number, because the mean of its divisors is an integer number (338455).

2⁶⁷⁶⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

676909 is a deficient number, since it is larger than the sum of its proper divisors (1).

676909 is an equidigital number, since it uses as much as digits as its factorization.

676909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 676909 is about 822.7447963980. The cubic root of 676909 is about 87.8031498637.

The spelling of 676909 in words is "six hundred seventy-six thousand, nine hundred nine".