680959 has 2 divisors, whose sum is σ = 680960. Its totient is φ = 680958.

The previous prime is 680929. The next prime is 680971. The reversal of 680959 is 959086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680959 - 2⁷ = 680831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340479 + 340480.

It is an arithmetic number, because the mean of its divisors is an integer number (340480).

2⁶⁸⁰⁹⁵⁹ is an apocalyptic number.

680959 is a deficient number, since it is larger than the sum of its proper divisors (1).

680959 is an equidigital number, since it uses as much as digits as its factorization.

680959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 680959 is about 825.2023994148. The cubic root of 680959 is about 87.9779128452.

The spelling of 680959 in words is "six hundred eighty thousand, nine hundred fifty-nine".