6644224063 has 2 divisors, whose sum is σ = 6644224064. Its totient is φ = 6644224062.

The previous prime is 6644224033. The next prime is 6644224099. The reversal of 6644224063 is 3604224466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6644224063 - 2¹³ = 6644215871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6644224033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322112031 + 3322112032.

It is an arithmetic number, because the mean of its divisors is an integer number (3322112032).

Almost surely, 2^6644224063 is an apocalyptic number.

6644224063 is a deficient number, since it is larger than the sum of its proper divisors (1).

6644224063 is an equidigital number, since it uses as much as digits as its factorization.

6644224063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 37.

The square root of 6644224063 is about 81512.1099162572. The cubic root of 6644224063 is about 1879.9577535965.

The spelling of 6644224063 in words is "six billion, six hundred forty-four million, two hundred twenty-four thousand, sixty-three".