1684672704 has 336 divisors, whose sum is σ = 5754831264. Its totient is φ = 464486400.

The previous prime is 1684672673. The next prime is 1684672721. The reversal of 1684672704 is 4072764861.

1684672704 is a `hidden beast` number, since 168 + 467 + 27 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1684672704.

It is a congruent number.

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, 9307494 + ... + 9307674.

It is an arithmetic number, because the mean of its divisors is an integer number (17127474).

Almost surely, 2^1684672704 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 1684672704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2877415632).

1684672704 is an abundant number, since it is smaller than the sum of its proper divisors (4070158560).

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

1684672704 is a wasteful number, since it uses less digits than its factorization.

1684672704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 1684672704 is about 41044.7646356999. The cubic root of 1684672704 is about 1189.8855206117.

It can be divided in two parts, 168467 and 2704, that added together give a palindrome (171171).

The spelling of 1684672704 in words is "one billion, six hundred eighty-four million, six hundred seventy-two thousand, seven hundred four".