680039 has 2 divisors, whose sum is σ = 680040. Its totient is φ = 680038.

The previous prime is 680027. The next prime is 680059. The reversal of 680039 is 930086.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680039 - 2¹⁶ = 614503 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 (680059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340019 + 340020.

It is an arithmetic number, because the mean of its divisors is an integer number (340020).

2⁶⁸⁰⁰³⁹ is an apocalyptic number.

680039 is a deficient number, since it is larger than the sum of its proper divisors (1).

680039 is an equidigital number, since it uses as much as digits as its factorization.

680039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 680039 is about 824.6447720079. The cubic root of 680039 is about 87.9382745518.

Subtracting 680039 from its reverse (930086), we obtain a cube (250047 = 63³).

The spelling of 680039 in words is "six hundred eighty thousand, thirty-nine".