684845513888 has 24 divisors (see below), whose sum is σ = 1348736397120. Its totient is φ = 342309286080.

The previous prime is 684845513887. The next prime is 684845513903. The reversal of 684845513888 is 888315548486.

It is not an unprimeable number, because it can be changed into a prime (684845513887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3447848 + ... + 3641063.

It is an arithmetic number, because the mean of its divisors is an integer number (56197349880).

Almost surely, 2^684845513888 is an apocalyptic number.

It is an amenable number.

684845513888 is a deficient number, since it is larger than the sum of its proper divisors (663890883232).

684845513888 is a wasteful number, since it uses less digits than its factorization.

684845513888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7091940 (or 7091932 counting only the distinct ones).

The product of its digits is 235929600, while the sum is 68.

The spelling of 684845513888 in words is "six hundred eighty-four billion, eight hundred forty-five million, five hundred thirteen thousand, eight hundred eighty-eight".