680239 has 4 divisors (see below), whose sum is σ = 777424. Its totient is φ = 583056.

The previous prime is 680237. The next prime is 680249. The reversal of 680239 is 932086.

680239 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, and also an emirpimes, since its reverse is a distinct semiprime: 932086 = 2 ⋅466043.

It is a cyclic number.

It is not a de Polignac number, because 680239 - 2¹ = 680237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680237) 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, 48582 + ... + 48595.

It is an arithmetic number, because the mean of its divisors is an integer number (194356).

2⁶⁸⁰²³⁹ is an apocalyptic number.

680239 is a deficient number, since it is larger than the sum of its proper divisors (97185).

680239 is an equidigital number, since it uses as much as digits as its factorization.

680239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97184.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 680239 is about 824.7660274284. The cubic root of 680239 is about 87.9468946118.

It can be divided in two parts, 680 and 239, that added together give a palindrome (919).

The spelling of 680239 in words is "six hundred eighty thousand, two hundred thirty-nine".