682109820 has 144 divisors (see below), whose sum is σ = 2389453248. Its totient is φ = 154275840.

The previous prime is 682109809. The next prime is 682109839. The reversal of 682109820 is 28901286.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119430 + ... + 125010.

Almost surely, 2^682109820 is an apocalyptic number.

682109820 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 682109820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194726624).

682109820 is an abundant number, since it is smaller than the sum of its proper divisors (1707343428).

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

682109820 is a wasteful number, since it uses less digits than its factorization.

682109820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5700 (or 5695 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 682109820 is about 26117.2322423338. The cubic root of 682109820 is about 880.2744581247.

The spelling of 682109820 in words is "six hundred eighty-two million, one hundred nine thousand, eight hundred twenty".