684323228 has 24 divisors (see below), whose sum is σ = 1261518720. Its totient is φ = 323915760.

The previous prime is 684323207. The next prime is 684323239. The reversal of 684323228 is 822323486.

684323228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 684323191 and 684323200.

It is a congruent 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, 144425 + ... + 149087.

It is an arithmetic number, because the mean of its divisors is an integer number (52563280).

Almost surely, 2^684323228 is an apocalyptic number.

It is an amenable number.

684323228 is a deficient number, since it is larger than the sum of its proper divisors (577195492).

684323228 is a wasteful number, since it uses less digits than its factorization.

684323228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617 (or 6615 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 684323228 is about 26159.5723971169. The cubic root of 684323228 is about 881.2255771244.

The spelling of 684323228 in words is "six hundred eighty-four million, three hundred twenty-three thousand, two hundred twenty-eight".