6647063 has 4 divisors (see below), whose sum is σ = 6661200. Its totient is φ = 6632928.

The previous prime is 6647059. The next prime is 6647077. The reversal of 6647063 is 3607466.

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 6647063 - 2² = 6647059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6338 + ... + 7311.

It is an arithmetic number, because the mean of its divisors is an integer number (1665300).

Almost surely, 2^6647063 is an apocalyptic number.

6647063 is a deficient number, since it is larger than the sum of its proper divisors (14137).

6647063 is a wasteful number, since it uses less digits than its factorization.

6647063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14136.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 6647063 is about 2578.1898688809. The cubic root of 6647063 is about 188.0225470921.

The spelling of 6647063 in words is "six million, six hundred forty-seven thousand, sixty-three".