680807 has 4 divisors (see below), whose sum is σ = 686136. Its totient is φ = 675480.

The previous prime is 680803. The next prime is 680809. The reversal of 680807 is 708086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708086 = 2 ⋅354043.

It is a cyclic number.

It is not a de Polignac number, because 680807 - 2² = 680803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680807.

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 680807.

It is not an unprimeable number, because it can be changed into a prime (680803) 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 3 ways as a sum of consecutive naturals, for example, 2468 + ... + 2729.

It is an arithmetic number, because the mean of its divisors is an integer number (171534).

2⁶⁸⁰⁸⁰⁷ is an apocalyptic number.

680807 is a deficient number, since it is larger than the sum of its proper divisors (5329).

680807 is a wasteful number, since it uses less digits than its factorization.

680807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 680807 is about 825.1102956575. The cubic root of 680807 is about 87.9713663728.

The spelling of 680807 in words is "six hundred eighty thousand, eight hundred seven".