684849308928 has 36 divisors (see below), whose sum is σ = 1822697902368. Its totient is φ = 228283102720.

The previous prime is 684849308903. The next prime is 684849308933. The reversal of 684849308928 is 829803948486.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445864668 + ... + 445866203.

It is an arithmetic number, because the mean of its divisors is an integer number (50630497288).

Almost surely, 2^684849308928 is an apocalyptic number.

It is an amenable number.

684849308928 is an abundant number, since it is smaller than the sum of its proper divisors (1137848593440).

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

684849308928 is an equidigital number, since it uses as much as digits as its factorization.

684849308928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891730890 (or 891730876 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 69.

The spelling of 684849308928 in words is "six hundred eighty-four billion, eight hundred forty-nine million, three hundred eight thousand, nine hundred twenty-eight".