684882256 has 20 divisors (see below), whose sum is σ = 1369765504. Its totient is φ = 331394400.

The previous prime is 684882251. The next prime is 684882257. The reversal of 684882256 is 652288486.

It is a happy number.

684882256 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684882251) 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 3 ways as a sum of consecutive naturals, for example, 689910 + ... + 690901.

Almost surely, 2^684882256 is an apocalyptic number.

It is an amenable number.

684882256 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

684882256 is a wasteful number, since it uses less digits than its factorization.

684882256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380850 (or 1380844 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 49.

The square root of 684882256 is about 26170.2551764403. The cubic root of 684882256 is about 881.4654714066.

The spelling of 684882256 in words is "six hundred eighty-four million, eight hundred eighty-two thousand, two hundred fifty-six".