682440 has 96 divisors (see below), whose sum is σ = 2298240. Its totient is φ = 161920.

The previous prime is 682439. The next prime is 682447. The reversal of 682440 is 44286.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 682440.

It is not an unprimeable number, because it can be changed into a prime (682447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14497 + ... + 14543.

It is an arithmetic number, because the mean of its divisors is an integer number (23940).

2⁶⁸²⁴⁴⁰ is an apocalyptic number.

682440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 682440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149120).

682440 is an abundant number, since it is smaller than the sum of its proper divisors (1615800).

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

682440 is a wasteful number, since it uses less digits than its factorization.

682440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 682440 is about 826.0992676428. The cubic root of 682440 is about 88.0416469537.

The spelling of 682440 in words is "six hundred eighty-two thousand, four hundred forty".