676009 has 2 divisors, whose sum is σ = 676010. Its totient is φ = 676008.

The previous prime is 676007. The next prime is 676031. The reversal of 676009 is 900676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 157609 = 720^2 + 397^2 .

It is a cyclic number.

It is not a de Polignac number, because 676009 - 2¹ = 676007 is a prime.

Together with 676007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (676007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338004 + 338005.

It is an arithmetic number, because the mean of its divisors is an integer number (338005).

2⁶⁷⁶⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

676009 is a deficient number, since it is larger than the sum of its proper divisors (1).

676009 is an equidigital number, since it uses as much as digits as its factorization.

676009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 676009 is about 822.1976647984. The cubic root of 676009 is about 87.7642190360.

It can be divided in two parts, 67600 and 9, that multiplied together give a square (608400 = 780²).

The spelling of 676009 in words is "six hundred seventy-six thousand, nine".