684732012 has 24 divisors (see below), whose sum is σ = 1604571696. Its totient is φ = 227263488.

The previous prime is 684732007. The next prime is 684732019. The reversal of 684732012 is 210237486.

It is not an unprimeable number, because it can be changed into a prime (684732019) 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 7 ways as a sum of consecutive naturals, for example, 119653 + ... + 125244.

It is an arithmetic number, because the mean of its divisors is an integer number (66857154).

Almost surely, 2^684732012 is an apocalyptic number.

It is an amenable number.

684732012 is an abundant number, since it is smaller than the sum of its proper divisors (919839684).

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

684732012 is a wasteful number, since it uses less digits than its factorization.

684732012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245137 (or 245135 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 684732012 is about 26167.3845082003. The cubic root of 684732012 is about 881.4010104074.

Adding to 684732012 its reverse (210237486), we get a palindrome (894969498).

The spelling of 684732012 in words is "six hundred eighty-four million, seven hundred thirty-two thousand, twelve".