6684374734866 has 48 divisors (see below), whose sum is σ = 14874796345344. Its totient is φ = 2167824127392.

The previous prime is 6684374734853. The next prime is 6684374735009.

6684374734866 is a `hidden beast` number, since 6 + 6 + 8 + 4 + 3 + 74 + 73 + 486 + 6 = 666.

6684374734866 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6684374734866² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6684374734794 and 6684374734803.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19091901 + ... + 19438863.

It is an arithmetic number, because the mean of its divisors is an integer number (309891590528).

Almost surely, 2^{6684374734866} is an apocalyptic number.

6684374734866 is an abundant number, since it is smaller than the sum of its proper divisors (8190421610478).

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

6684374734866 is a wasteful number, since it uses less digits than its factorization.

6684374734866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375935 (or 375932 counting only the distinct ones).

The product of its digits is 2341011456, while the sum is 72.

The spelling of 6684374734866 in words is "six trillion, six hundred eighty-four billion, three hundred seventy-four million, seven hundred thirty-four thousand, eight hundred sixty-six".