1066321349 has 2 divisors, whose sum is σ = 1066321350. Its totient is φ = 1066321348.

The previous prime is 1066321327. The next prime is 1066321351. The reversal of 1066321349 is 9431236601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 704637025 + 361684324 = 26545^2 + 19018^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066321349 - 2¹² = 1066317253 is a prime.

It is a super-2 number, since 2×1066321349² = 2274082438666359602, which contains 22 as substring.

Together with 1066321351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066321309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533160674 + 533160675.

It is an arithmetic number, because the mean of its divisors is an integer number (533160675).

Almost surely, 2^1066321349 is an apocalyptic number.

It is an amenable number.

1066321349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066321349 is an equidigital number, since it uses as much as digits as its factorization.

1066321349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1066321349 is about 32654.5762336613. The cubic root of 1066321349 is about 1021.6356395473.

The spelling of 1066321349 in words is "one billion, sixty-six million, three hundred twenty-one thousand, three hundred forty-nine".