680847 has 8 divisors (see below), whose sum is σ = 915456. Its totient is φ = 450072.

The previous prime is 680831. The next prime is 680857. The reversal of 680847 is 748086.

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

It is not a de Polignac number, because 680847 - 2⁴ = 680831 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680847.

It is not an unprimeable number, because it can be changed into a prime (680857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513 + ... + 1274.

It is an arithmetic number, because the mean of its divisors is an integer number (114432).

2⁶⁸⁰⁸⁴⁷ is an apocalyptic number.

680847 is a deficient number, since it is larger than the sum of its proper divisors (234609).

680847 is a wasteful number, since it uses less digits than its factorization.

680847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 680847 is about 825.1345344851. The cubic root of 680847 is about 87.9730892232.

The spelling of 680847 in words is "six hundred eighty thousand, eight hundred forty-seven".