681200 has 60 divisors (see below), whose sum is σ = 1775928. Its totient is φ = 249600.

The previous prime is 681179. The next prime is 681221. The reversal of 681200 is 2186.

It is an interprime number because it is at equal distance from previous prime (681179) and next prime (681221).

It is a congruent number.

It is an unprimeable number.

681200 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5135 + ... + 5265.

2⁶⁸¹²⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (887964).

681200 is an abundant number, since it is smaller than the sum of its proper divisors (1094728).

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

681200 is a wasteful number, since it uses less digits than its factorization.

681200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 681200 is about 825.3484112785. The cubic root of 681200 is about 87.9882904530.

Adding to 681200 its reverse (2186), we get a palindrome (683386).

The spelling of 681200 in words is "six hundred eighty-one thousand, two hundred".