684016072775868 has 96 divisors (see below), whose sum is σ = 1926976688627200. Its totient is φ = 184478806077696.

The previous prime is 684016072775851. The next prime is 684016072775909. The reversal of 684016072775868 is 868577270610486.

It is a self number, because there is not a number n which added to its sum of digits gives 684016072775868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 773170723 + ... + 774054906.

Almost surely, 2^{684016072775868} is an apocalyptic number.

It is an amenable number.

684016072775868 is an abundant number, since it is smaller than the sum of its proper divisors (1242960615851332).

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

684016072775868 is a wasteful number, since it uses less digits than its factorization.

684016072775868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547225939 (or 1547225937 counting only the distinct ones).

The product of its (nonzero) digits is 1517322240, while the sum is 75.

The spelling of 684016072775868 in words is "six hundred eighty-four trillion, sixteen billion, seventy-two million, seven hundred seventy-five thousand, eight hundred sixty-eight".