684884768 has 48 divisors (see below), whose sum is σ = 1367150400. Its totient is φ = 337708800.

The previous prime is 684884749. The next prime is 684884791. The reversal of 684884768 is 867488486.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833798 + ... + 834618.

It is an arithmetic number, because the mean of its divisors is an integer number (28482300).

Almost surely, 2^684884768 is an apocalyptic number.

It is an amenable number.

684884768 is a deficient number, since it is larger than the sum of its proper divisors (682265632).

684884768 is a wasteful number, since it uses less digits than its factorization.

684884768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1153 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 59.

The square root of 684884768 is about 26170.3031698144. The cubic root of 684884768 is about 881.4665490802.

The spelling of 684884768 in words is "six hundred eighty-four million, eight hundred eighty-four thousand, seven hundred sixty-eight".