684323212 has 12 divisors (see below), whose sum is σ = 1198186416. Its totient is φ = 341984240.

The previous prime is 684323207. The next prime is 684323239. The reversal of 684323212 is 212323486.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35464 + ... + 51247.

It is an arithmetic number, because the mean of its divisors is an integer number (99848868).

Almost surely, 2^684323212 is an apocalyptic number.

It is an amenable number.

684323212 is a deficient number, since it is larger than the sum of its proper divisors (513863204).

684323212 is a wasteful number, since it uses less digits than its factorization.

684323212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88688 (or 88686 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 684323212 is about 26159.5720913015. The cubic root of 684323212 is about 881.2255702565.

Adding to 684323212 its reverse (212323486), we get a palindrome (896646698).

The spelling of 684323212 in words is "six hundred eighty-four million, three hundred twenty-three thousand, two hundred twelve".