684094798980 has 144 divisors (see below), whose sum is σ = 2184670488000. Its totient is φ = 172794850560.

The previous prime is 684094798979. The next prime is 684094799009. The reversal of 684094798980 is 89897490486.

684094798980 is a `hidden beast` number, since 6 + 8 + 409 + 47 + 98 + 98 + 0 = 666.

684094798980 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 = 684094798899 and 684094798908.

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, 26317590 + ... + 26343570.

Almost surely, 2^684094798980 is an apocalyptic number.

684094798980 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 684094798980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1092335244000).

684094798980 is an abundant number, since it is smaller than the sum of its proper divisors (1500575689020).

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

684094798980 is a wasteful number, since it uses less digits than its factorization.

684094798980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33714 (or 33709 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 72.

The spelling of 684094798980 in words is "six hundred eighty-four billion, ninety-four million, seven hundred ninety-eight thousand, nine hundred eighty".