840682419660 has 288 divisors, whose sum is σ = 2788516523520. Its totient is φ = 204282086400.

The previous prime is 840682419659. The next prime is 840682419677. The reversal of 840682419660 is 66914286048.

It is a junction number, because it is equal to n+sod(n) for n = 840682419597 and 840682419606.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9913399 + ... + 9997841.

It is an arithmetic number, because the mean of its divisors is an integer number (9682349040).

Almost surely, 2^840682419660 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 840682419660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394258261760).

840682419660 is an abundant number, since it is smaller than the sum of its proper divisors (1947834103860).

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

840682419660 is a wasteful number, since it uses less digits than its factorization.

840682419660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84589 (or 84584 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 840682419660 in words is "eight hundred forty billion, six hundred eighty-two million, four hundred nineteen thousand, six hundred sixty".