680886 has 28 divisors (see below), whose sum is σ = 1534572. Its totient is φ = 226476.

The previous prime is 680881. The next prime is 680917. The reversal of 680886 is 688086.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 680886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680881) 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 13 ways as a sum of consecutive naturals, for example, 1225 + ... + 1691.

2⁶⁸⁰⁸⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767286).

680886 is an abundant number, since it is smaller than the sum of its proper divisors (853686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680886 is an equidigital number, since it uses as much as digits as its factorization.

680886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 680886 is about 825.1581666566. The cubic root of 680886 is about 87.9747689373.

The spelling of 680886 in words is "six hundred eighty thousand, eight hundred eighty-six".