6649410671 has 2 divisors, whose sum is σ = 6649410672. Its totient is φ = 6649410670.

The previous prime is 6649410661. The next prime is 6649410673. The reversal of 6649410671 is 1760149466.

6649410671 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6649410671 is a prime.

Together with 6649410673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6649410673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3324705335 + 3324705336.

It is an arithmetic number, because the mean of its divisors is an integer number (3324705336).

Almost surely, 2^6649410671 is an apocalyptic number.

6649410671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6649410671 is an equidigital number, since it uses as much as digits as its factorization.

6649410671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 6649410671 is about 81543.9186635030. The cubic root of 6649410671 is about 1880.4468033216.

The spelling of 6649410671 in words is "six billion, six hundred forty-nine million, four hundred ten thousand, six hundred seventy-one".