680289 has 8 divisors (see below), whose sum is σ = 960480. Its totient is φ = 426816.

The previous prime is 680263. The next prime is 680291. The reversal of 680289 is 982086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 680289 - 2⁷ = 680161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6619 + ... + 6720.

It is an arithmetic number, because the mean of its divisors is an integer number (120060).

2⁶⁸⁰²⁸⁹ is an apocalyptic number.

It is an amenable number.

680289 is a deficient number, since it is larger than the sum of its proper divisors (280191).

680289 is a wasteful number, since it uses less digits than its factorization.

680289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13359.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 680289 is about 824.7963384982. The cubic root of 680289 is about 87.9490493628.

It can be divided in two parts, 680 and 289, that added together give a palindrome (969).

The spelling of 680289 in words is "six hundred eighty thousand, two hundred eighty-nine".