680842 has 8 divisors (see below), whose sum is σ = 1043136. Its totient is φ = 333132.

The previous prime is 680831. The next prime is 680857. The reversal of 680842 is 248086.

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

It is a self number, because there is not a number n which added to its sum of digits gives 680842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3528 + ... + 3715.

It is an arithmetic number, because the mean of its divisors is an integer number (130392).

2⁶⁸⁰⁸⁴² is an apocalyptic number.

680842 is a deficient number, since it is larger than the sum of its proper divisors (362294).

680842 is a wasteful number, since it uses less digits than its factorization.

680842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7292.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 680842 is about 825.1315046706. The cubic root of 680842 is about 87.9728738706.

It can be divided in two parts, 68084 and 2, that added together give a palindrome (68086).

The spelling of 680842 in words is "six hundred eighty thousand, eight hundred forty-two".