684025693832 has 64 divisors (see below), whose sum is σ = 1402002389760. Its totient is φ = 310962240000.

The previous prime is 684025693831. The next prime is 684025693837. The reversal of 684025693832 is 238396520486.

It is a super-2 number, since 2×684025693832² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (684025693831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5641607 + ... + 5761577.

It is an arithmetic number, because the mean of its divisors is an integer number (21906287340).

Almost surely, 2^684025693832 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 684025693832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701001194880).

684025693832 is an abundant number, since it is smaller than the sum of its proper divisors (717976695928).

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

684025693832 is a wasteful number, since it uses less digits than its factorization.

684025693832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120814 (or 120810 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 56.

The spelling of 684025693832 in words is "six hundred eighty-four billion, twenty-five million, six hundred ninety-three thousand, eight hundred thirty-two".