684804260 has 96 divisors (see below), whose sum is σ = 1755371520. Its totient is φ = 219340800.

The previous prime is 684804259. The next prime is 684804287. The reversal of 684804260 is 62408486.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 123140 + ... + 128580.

It is an arithmetic number, because the mean of its divisors is an integer number (18285120).

Almost surely, 2^684804260 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 684804260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877685760).

684804260 is an abundant number, since it is smaller than the sum of its proper divisors (1070567260).

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

684804260 is a wasteful number, since it uses less digits than its factorization.

684804260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5517 (or 5515 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 684804260 is about 26168.7649689472. The cubic root of 684804260 is about 881.4320090168.

The spelling of 684804260 in words is "six hundred eighty-four million, eight hundred four thousand, two hundred sixty".