680899 has 4 divisors (see below), whose sum is σ = 683200. Its totient is φ = 678600.

The previous prime is 680881. The next prime is 680917. The reversal of 680899 is 998086.

It is a happy number.

680899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (680881) and next prime (680917).

It is a cyclic number.

It is not a de Polignac number, because 680899 - 2⁹ = 680387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (170800).

2⁶⁸⁰⁸⁹⁹ is an apocalyptic number.

680899 is a deficient number, since it is larger than the sum of its proper divisors (2301).

680899 is a wasteful number, since it uses less digits than its factorization.

680899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 680899 is about 825.1660438966. The cubic root of 680899 is about 87.9753288278.

The spelling of 680899 in words is "six hundred eighty thousand, eight hundred ninety-nine".