6646008223 has 2 divisors, whose sum is σ = 6646008224. Its totient is φ = 6646008222.

The previous prime is 6646008167. The next prime is 6646008241. The reversal of 6646008223 is 3228006466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6646008223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6646008023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3323004111 + 3323004112.

It is an arithmetic number, because the mean of its divisors is an integer number (3323004112).

Almost surely, 2^6646008223 is an apocalyptic number.

6646008223 is a deficient number, since it is larger than the sum of its proper divisors (1).

6646008223 is an equidigital number, since it uses as much as digits as its factorization.

6646008223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 6646008223 is about 81523.0533223578. The cubic root of 6646008223 is about 1880.1260122831.

The spelling of 6646008223 in words is "six billion, six hundred forty-six million, eight thousand, two hundred twenty-three".