684047768 has 16 divisors (see below), whose sum is σ = 1358036280. Its totient is φ = 321904768.

The previous prime is 684047753. The next prime is 684047779. The reversal of 684047768 is 867740486.

684047768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514746 + ... + 2515017.

Almost surely, 2^684047768 is an apocalyptic number.

684047768 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

684047768 is a deficient number, since it is larger than the sum of its proper divisors (673988512).

684047768 is a wasteful number, since it uses less digits than its factorization.

684047768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029786 (or 5029782 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 50.

The square root of 684047768 is about 26154.3068728651. The cubic root of 684047768 is about 881.1073216154.

The spelling of 684047768 in words is "six hundred eighty-four million, forty-seven thousand, seven hundred sixty-eight".