6644713 has 4 divisors (see below), whose sum is σ = 6695568. Its totient is φ = 6593860.

The previous prime is 6644681. The next prime is 6644717. The reversal of 6644713 is 3174466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6644713 - 2⁵ = 6644681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6644717) 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, 25231 + ... + 25492.

It is an arithmetic number, because the mean of its divisors is an integer number (1673892).

Almost surely, 2^6644713 is an apocalyptic number.

It is an amenable number.

6644713 is a deficient number, since it is larger than the sum of its proper divisors (50855).

6644713 is a wasteful number, since it uses less digits than its factorization.

6644713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50854.

The product of its digits is 12096, while the sum is 31.

The square root of 6644713 is about 2577.7340824841. The cubic root of 6644713 is about 188.0003866749. Note that the first 3 decimals are identical.

The spelling of 6644713 in words is "six million, six hundred forty-four thousand, seven hundred thirteen".