6807663668 has 24 divisors (see below), whose sum is σ = 13584525192. Its totient is φ = 2957174784.

The previous prime is 6807663659. The next prime is 6807663679. The reversal of 6807663668 is 8663667086.

It can be written as a sum of positive squares in 4 ways, for example, as 351862564 + 6455801104 = 18758^2 + 80348^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3849605 + ... + 3851372.

It is an arithmetic number, because the mean of its divisors is an integer number (566021883).

Almost surely, 2^6807663668 is an apocalyptic number.

6807663668 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6807663668 is a deficient number, since it is larger than the sum of its proper divisors (6776861524).

6807663668 is a wasteful number, since it uses less digits than its factorization.

6807663668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7701011 (or 7701009 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 56.

The square root of 6807663668 is about 82508.5672400145. The cubic root of 6807663668 is about 1895.2479276844.

The spelling of 6807663668 in words is "six billion, eight hundred seven million, six hundred sixty-three thousand, six hundred sixty-eight".