680873 has 2 divisors, whose sum is σ = 680874. Its totient is φ = 680872.

The previous prime is 680861. The next prime is 680879. The reversal of 680873 is 378086.

680873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 619369 + 61504 = 787^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 680873 - 2⁴ = 680857 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680873.

It is not a weakly prime, because it can be changed into another prime (680879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340436 + 340437.

It is an arithmetic number, because the mean of its divisors is an integer number (340437).

2⁶⁸⁰⁸⁷³ is an apocalyptic number.

It is an amenable number.

680873 is a deficient number, since it is larger than the sum of its proper divisors (1).

680873 is an equidigital number, since it uses as much as digits as its factorization.

680873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 680873 is about 825.1502893413. The cubic root of 680873 is about 87.9742090397.

The spelling of 680873 in words is "six hundred eighty thousand, eight hundred seventy-three".