6644227 has 2 divisors, whose sum is σ = 6644228. Its totient is φ = 6644226.

The previous prime is 6644191. The next prime is 6644269. The reversal of 6644227 is 7224466.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6644227 is a prime.

It is not a weakly prime, because it can be changed into another prime (6644327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322113 + 3322114.

It is an arithmetic number, because the mean of its divisors is an integer number (3322114).

Almost surely, 2^6644227 is an apocalyptic number.

6644227 is a deficient number, since it is larger than the sum of its proper divisors (1).

6644227 is an equidigital number, since it uses as much as digits as its factorization.

6644227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 31.

The square root of 6644227 is about 2577.6398119210. The cubic root of 6644227 is about 187.9958030601.

The spelling of 6644227 in words is "six million, six hundred forty-four thousand, two hundred twenty-seven".