6543006687 has 64 divisors (see below), whose sum is σ = 11685990400. Its totient is φ = 3534541920.

The previous prime is 6543006671. The next prime is 6543006731. The reversal of 6543006687 is 7866003456.

It is not a de Polignac number, because 6543006687 - 2⁴ = 6543006671 is a prime.

It is a super-2 number, since 2×6543006687² = 85621873012253431938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543006647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1962612 + ... + 1965942.

It is an arithmetic number, because the mean of its divisors is an integer number (182593600).

Almost surely, 2^6543006687 is an apocalyptic number.

6543006687 is a deficient number, since it is larger than the sum of its proper divisors (5142983713).

6543006687 is a wasteful number, since it uses less digits than its factorization.

6543006687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913 (or 3907 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 6543006687 is about 80888.8539107830. The cubic root of 6543006687 is about 1870.3625067665.

The spelling of 6543006687 in words is "six billion, five hundred forty-three million, six thousand, six hundred eighty-seven".