684768889075 has 6 divisors (see below), whose sum is σ = 849113422484. Its totient is φ = 547815111240.

The previous prime is 684768889067. The next prime is 684768889087. The reversal of 684768889075 is 570988867486.

It is not a de Polignac number, because 684768889075 - 2³ = 684768889067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 684768888992 and 684768889010.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13695377757 + ... + 13695377806.

Almost surely, 2^684768889075 is an apocalyptic number.

684768889075 is a deficient number, since it is larger than the sum of its proper divisors (164344533409).

684768889075 is a wasteful number, since it uses less digits than its factorization.

684768889075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27390755573 (or 27390755568 counting only the distinct ones).

The product of its (nonzero) digits is 1300561920, while the sum is 76.

The spelling of 684768889075 in words is "six hundred eighty-four billion, seven hundred sixty-eight million, eight hundred eighty-nine thousand, seventy-five".