680567 has 2 divisors, whose sum is σ = 680568. Its totient is φ = 680566.

The previous prime is 680539. The next prime is 680569. The reversal of 680567 is 765086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680567 - 2⁶ = 680503 is a prime.

Together with 680569, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340283 + 340284.

It is an arithmetic number, because the mean of its divisors is an integer number (340284).

2⁶⁸⁰⁵⁶⁷ is an apocalyptic number.

680567 is a deficient number, since it is larger than the sum of its proper divisors (1).

680567 is an equidigital number, since it uses as much as digits as its factorization.

680567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 680567 is about 824.9648477360. The cubic root of 680567 is about 87.9610278533.

The spelling of 680567 in words is "six hundred eighty thousand, five hundred sixty-seven".