6644327 has 2 divisors, whose sum is σ = 6644328. Its totient is φ = 6644326.

The previous prime is 6644311. The next prime is 6644359. The reversal of 6644327 is 7234466.

It is an a-pointer prime, because the next prime (6644359) can be obtained adding 6644327 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6644327 - 2⁴ = 6644311 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6644293 and 6644302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6644377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322163 + 3322164.

It is an arithmetic number, because the mean of its divisors is an integer number (3322164).

Almost surely, 2^6644327 is an apocalyptic number.

6644327 is a deficient number, since it is larger than the sum of its proper divisors (1).

6644327 is an equidigital number, since it uses as much as digits as its factorization.

6644327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

The square root of 6644327 is about 2577.6592094379. The cubic root of 6644327 is about 187.9967462090.

The spelling of 6644327 in words is "six million, six hundred forty-four thousand, three hundred twenty-seven".