680003 has 2 divisors, whose sum is σ = 680004. Its totient is φ = 680002.

The previous prime is 679999. The next prime is 680027. The reversal of 680003 is 300086.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680003 - 2² = 679999 is a prime.

It is not a weakly prime, because it can be changed into another prime (680083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340001 + 340002.

It is an arithmetic number, because the mean of its divisors is an integer number (340002).

2⁶⁸⁰⁰⁰³ is an apocalyptic number.

680003 is a deficient number, since it is larger than the sum of its proper divisors (1).

680003 is an equidigital number, since it uses as much as digits as its factorization.

680003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 680003 is about 824.6229441387. The cubic root of 680003 is about 87.9367227615.

Adding to 680003 its reverse (300086), we get a palindrome (980089).

The spelling of 680003 in words is "six hundred eighty thousand, three".