6647000887 has 2 divisors, whose sum is σ = 6647000888. Its totient is φ = 6647000886.

The previous prime is 6647000881. The next prime is 6647000909. The reversal of 6647000887 is 7880007466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6647000887 - 2³ = 6647000879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6647000881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3323500443 + 3323500444.

It is an arithmetic number, because the mean of its divisors is an integer number (3323500444).

Almost surely, 2^6647000887 is an apocalyptic number.

6647000887 is a deficient number, since it is larger than the sum of its proper divisors (1).

6647000887 is an equidigital number, since it uses as much as digits as its factorization.

6647000887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 6647000887 is about 81529.1413360891. The cubic root of 6647000887 is about 1880.2196143588.

The spelling of 6647000887 in words is "six billion, six hundred forty-seven million, eight hundred eighty-seven", and thus it is an aban number.