680843 has 4 divisors (see below), whose sum is σ = 687960. Its totient is φ = 673728.

The previous prime is 680831. The next prime is 680857. The reversal of 680843 is 348086.

680843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 680843 - 2⁸ = 680587 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680843.

It is not an unprimeable number, because it can be changed into a prime (680803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3413 + ... + 3606.

It is an arithmetic number, because the mean of its divisors is an integer number (171990).

2⁶⁸⁰⁸⁴³ is an apocalyptic number.

680843 is a deficient number, since it is larger than the sum of its proper divisors (7117).

680843 is an equidigital number, since it uses as much as digits as its factorization.

680843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7116.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 680843 is about 825.1321106344. The cubic root of 680843 is about 87.9729169412.

The spelling of 680843 in words is "six hundred eighty thousand, eight hundred forty-three".