6684528687 has 4 divisors (see below), whose sum is σ = 8912704920. Its totient is φ = 4456352456.

The previous prime is 6684528649. The next prime is 6684528689. The reversal of 6684528687 is 7868254866.

6684528687 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6684528687 - 2¹⁶ = 6684463151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6684528687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6684528689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114088112 + ... + 1114088117.

It is an arithmetic number, because the mean of its divisors is an integer number (2228176230).

Almost surely, 2^6684528687 is an apocalyptic number.

6684528687 is a deficient number, since it is larger than the sum of its proper divisors (2228176233).

6684528687 is a wasteful number, since it uses less digits than its factorization.

6684528687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228176232.

The product of its digits is 30965760, while the sum is 60.

The square root of 6684528687 is about 81758.9670127993. The cubic root of 6684528687 is about 1883.7514392648.

The spelling of 6684528687 in words is "six billion, six hundred eighty-four million, five hundred twenty-eight thousand, six hundred eighty-seven".