684965848569486 has 96 divisors (see below), whose sum is σ = 1546525217084064. Its totient is φ = 201950906572800.

The previous prime is 684965848569467. The next prime is 684965848569487.

684965848569486 is nontrivially palindromic in base 10.

684965848569486 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 = 684965848569393 and 684965848569402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684965848569487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1276240806 + ... + 1276777398.

It is an arithmetic number, because the mean of its divisors is an integer number (16109637677959).

Almost surely, 2^{684965848569486} is an apocalyptic number.

684965848569486 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 684965848569486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773262608542032).

684965848569486 is an abundant number, since it is smaller than the sum of its proper divisors (861559368514578).

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

684965848569486 is a wasteful number, since it uses less digits than its factorization.

684965848569486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584178 (or 584167 counting only the distinct ones).

The product of its digits is 687970713600, while the sum is 96.

The spelling of 684965848569486 in words is "six hundred eighty-four trillion, nine hundred sixty-five billion, eight hundred forty-eight million, five hundred sixty-nine thousand, four hundred eighty-six".