6640066327 has 2 divisors, whose sum is σ = 6640066328. Its totient is φ = 6640066326.

The previous prime is 6640066319. The next prime is 6640066333. The reversal of 6640066327 is 7236600466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6640066327 - 2³ = 6640066319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6640066327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6640066127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3320033163 + 3320033164.

It is an arithmetic number, because the mean of its divisors is an integer number (3320033164).

Almost surely, 2^6640066327 is an apocalyptic number.

6640066327 is a deficient number, since it is larger than the sum of its proper divisors (1).

6640066327 is an equidigital number, since it uses as much as digits as its factorization.

6640066327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 40.

The square root of 6640066327 is about 81486.6021318842. The cubic root of 6640066327 is about 1879.5655332794.

The spelling of 6640066327 in words is "six billion, six hundred forty million, sixty-six thousand, three hundred twenty-seven".