684025472 has 96 divisors (see below), whose sum is σ = 1494773280. Its totient is φ = 311620608.

The previous prime is 684025457. The next prime is 684025477. The reversal of 684025472 is 274520486.

It is not an unprimeable number, because it can be changed into a prime (684025477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2227943 + ... + 2228249.

It is an arithmetic number, because the mean of its divisors is an integer number (15570555).

Almost surely, 2^684025472 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 684025472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (747386640).

684025472 is an abundant number, since it is smaller than the sum of its proper divisors (810747808).

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

684025472 is a wasteful number, since it uses less digits than its factorization.

684025472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 684025472 is about 26153.8806298415. The cubic root of 684025472 is about 881.0977485109.

The spelling of 684025472 in words is "six hundred eighty-four million, twenty-five thousand, four hundred seventy-two".