680159 has 2 divisors, whose sum is σ = 680160. Its totient is φ = 680158.

The previous prime is 680129. The next prime is 680161. The reversal of 680159 is 951086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680159 - 2¹⁶ = 614623 is a prime.

It is a Sophie Germain prime.

Together with 680161, 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 (680129) 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, 340079 + 340080.

It is an arithmetic number, because the mean of its divisors is an integer number (340080).

2⁶⁸⁰¹⁵⁹ is an apocalyptic number.

680159 is a deficient number, since it is larger than the sum of its proper divisors (1).

680159 is an equidigital number, since it uses as much as digits as its factorization.

680159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 680159 is about 824.7175273995. The cubic root of 680159 is about 87.9434467906.

The spelling of 680159 in words is "six hundred eighty thousand, one hundred fifty-nine".