1684708704 has 144 divisors (see below), whose sum is σ = 5797497888. Its totient is φ = 453021696.

The previous prime is 1684708703. The next prime is 1684708709. The reversal of 1684708704 is 4078074861.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 1684708704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1684708703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9694 + ... + 58850.

It is an arithmetic number, because the mean of its divisors is an integer number (40260402).

Almost surely, 2^1684708704 is an apocalyptic number.

1684708704 is a gapful number since it is divisible by the number (14) 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 1684708704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2898748944).

1684708704 is an abundant number, since it is smaller than the sum of its proper divisors (4112789184).

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

1684708704 is a wasteful number, since it uses less digits than its factorization.

1684708704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49197 (or 49186 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 1684708704 is about 41045.2031789343. The cubic root of 1684708704 is about 1189.8939961598.

The spelling of 1684708704 in words is "one billion, six hundred eighty-four million, seven hundred eight thousand, seven hundred four".