682840 has 32 divisors (see below), whose sum is σ = 1576080. Its totient is φ = 266112.

The previous prime is 682819. The next prime is 682901. The reversal of 682840 is 48286.

682840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 682799 and 682808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1522 + ... + 1918.

2⁶⁸²⁸⁴⁰ 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 682840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (788040).

682840 is an abundant number, since it is smaller than the sum of its proper divisors (893240).

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

682840 is a wasteful number, since it uses less digits than its factorization.

682840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 682840 is about 826.3413338325. The cubic root of 682840 is about 88.0588449396.

The spelling of 682840 in words is "six hundred eighty-two thousand, eight hundred forty".