680189 has 2 divisors, whose sum is σ = 680190. Its totient is φ = 680188.

The previous prime is 680177. The next prime is 680203. The reversal of 680189 is 981086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574564 + 105625 = 758^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 680189 - 2⁸ = 679933 is a prime.

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, 340094 + 340095.

It is an arithmetic number, because the mean of its divisors is an integer number (340095).

2⁶⁸⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

680189 is a deficient number, since it is larger than the sum of its proper divisors (1).

680189 is an equidigital number, since it uses as much as digits as its factorization.

680189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 680189 is about 824.7357152446. The cubic root of 680189 is about 87.9447397552.

The spelling of 680189 in words is "six hundred eighty thousand, one hundred eighty-nine".