1066646227 has 2 divisors, whose sum is σ = 1066646228. Its totient is φ = 1066646226.

The previous prime is 1066646219. The next prime is 1066646279. The reversal of 1066646227 is 7226466601.

It is a weak prime.

It is an emirp because it is prime and its reverse (7226466601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1066646227 - 2³ = 1066646219 is a prime.

It is a super-2 number, since 2×1066646227² = 2275468347146671058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066646227.

It is not a weakly prime, because it can be changed into another prime (1066646327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533323113 + 533323114.

It is an arithmetic number, because the mean of its divisors is an integer number (533323114).

Almost surely, 2^1066646227 is an apocalyptic number.

1066646227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066646227 is an equidigital number, since it uses as much as digits as its factorization.

1066646227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1066646227 is about 32659.5503183984. The cubic root of 1066646227 is about 1021.7393835208.

The spelling of 1066646227 in words is "one billion, sixty-six million, six hundred forty-six thousand, two hundred twenty-seven".