6644670611 has 2 divisors, whose sum is σ = 6644670612. Its totient is φ = 6644670610.

The previous prime is 6644670601. The next prime is 6644670619. The reversal of 6644670611 is 1160764466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6644670611 - 2²⁶ = 6577561747 is a prime.

It is a super-2 number, since 2×6644670611² = 88303295057374226642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6644670619) 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 as a sum of consecutive naturals, namely, 3322335305 + 3322335306.

It is an arithmetic number, because the mean of its divisors is an integer number (3322335306).

Almost surely, 2^6644670611 is an apocalyptic number.

6644670611 is a deficient number, since it is larger than the sum of its proper divisors (1).

6644670611 is an equidigital number, since it uses as much as digits as its factorization.

6644670611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 6644670611 is about 81514.8490215126. The cubic root of 6644670611 is about 1879.9998690018. Note that the first 3 decimals are identical.

The spelling of 6644670611 in words is "six billion, six hundred forty-four million, six hundred seventy thousand, six hundred eleven".