681036 has 48 divisors (see below), whose sum is σ = 1747200. Its totient is φ = 205632.

The previous prime is 681019. The next prime is 681041. The reversal of 681036 is 630186.

It is a junction number, because it is equal to n+sod(n) for n = 680997 and 681015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6561 + ... + 6663.

It is an arithmetic number, because the mean of its divisors is an integer number (36400).

2⁶⁸¹⁰³⁶ 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 681036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873600).

681036 is an abundant number, since it is smaller than the sum of its proper divisors (1066164).

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

681036 is a wasteful number, since it uses less digits than its factorization.

681036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 681036 is about 825.2490533166. The cubic root of 681036 is about 87.9812287786.

The spelling of 681036 in words is "six hundred eighty-one thousand, thirty-six".