684870561126852 has 24 divisors (see below), whose sum is σ = 1610614232994816. Its totient is φ = 226492626513888.

The previous prime is 684870561126799. The next prime is 684870561126881. The reversal of 684870561126852 is 258621165078486.

684870561126852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 224695064463 + ... + 224695067510.

It is an arithmetic number, because the mean of its divisors is an integer number (67108926374784).

Almost surely, 2^{684870561126852} is an apocalyptic number.

It is an amenable number.

684870561126852 is an abundant number, since it is smaller than the sum of its proper divisors (925743671867964).

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

684870561126852 is a wasteful number, since it uses less digits than its factorization.

684870561126852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449390132107 (or 449390132105 counting only the distinct ones).

The product of its (nonzero) digits is 309657600, while the sum is 69.

The spelling of 684870561126852 in words is "six hundred eighty-four trillion, eight hundred seventy billion, five hundred sixty-one million, one hundred twenty-six thousand, eight hundred fifty-two".