6646220027 has 2 divisors, whose sum is σ = 6646220028. Its totient is φ = 6646220026.

The previous prime is 6646220011. The next prime is 6646220069. The reversal of 6646220027 is 7200226466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6646220027 - 2⁴ = 6646220011 is a prime.

It is not a weakly prime, because it can be changed into another prime (6646280027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3323110013 + 3323110014.

It is an arithmetic number, because the mean of its divisors is an integer number (3323110014).

Almost surely, 2^6646220027 is an apocalyptic number.

6646220027 is a deficient number, since it is larger than the sum of its proper divisors (1).

6646220027 is an equidigital number, since it uses as much as digits as its factorization.

6646220027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 6646220027 is about 81524.3523555999. The cubic root of 6646220027 is about 1880.1459848724.

The spelling of 6646220027 in words is "six billion, six hundred forty-six million, two hundred twenty thousand, twenty-seven".