684148576 has 48 divisors (see below), whose sum is σ = 1382684688. Its totient is φ = 333043200.

The previous prime is 684148573. The next prime is 684148603. The reversal of 684148576 is 675841486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684148573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578706 + ... + 579886.

It is an arithmetic number, because the mean of its divisors is an integer number (28805931).

Almost surely, 2^684148576 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 684148576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691342344).

684148576 is an abundant number, since it is smaller than the sum of its proper divisors (698536112).

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

684148576 is a wasteful number, since it uses less digits than its factorization.

684148576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655 (or 1647 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 684148576 is about 26156.2339796845. The cubic root of 684148576 is about 881.1506023667.

The spelling of 684148576 in words is "six hundred eighty-four million, one hundred forty-eight thousand, five hundred seventy-six".