680823 has 36 divisors (see below), whose sum is σ = 1207752. Its totient is φ = 364320.

The previous prime is 680809. The next prime is 680831. The reversal of 680823 is 328086.

It is not a de Polignac number, because 680823 - 2⁶ = 680759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680803) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29590 + ... + 29612.

2⁶⁸⁰⁸²³ is an apocalyptic number.

680823 is a deficient number, since it is larger than the sum of its proper divisors (526929).

680823 is a wasteful number, since it uses less digits than its factorization.

680823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 680823 is about 825.1199912740. The cubic root of 680823 is about 87.9720555211.

The spelling of 680823 in words is "six hundred eighty thousand, eight hundred twenty-three".