1066321259 has 2 divisors, whose sum is σ = 1066321260. Its totient is φ = 1066321258.

The previous prime is 1066321187. The next prime is 1066321261. The reversal of 1066321259 is 9521236601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066321259 is a prime.

It is a super-2 number, since 2×1066321259² = 2274082054790690162, which contains 22 as substring.

Together with 1066321261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1066321559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533160629 + 533160630.

It is an arithmetic number, because the mean of its divisors is an integer number (533160630).

Almost surely, 2^1066321259 is an apocalyptic number.

1066321259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066321259 is an equidigital number, since it uses as much as digits as its factorization.

1066321259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1066321259 is about 32654.5748556002. The cubic root of 1066321259 is about 1021.6356108045.

The spelling of 1066321259 in words is "one billion, sixty-six million, three hundred twenty-one thousand, two hundred fifty-nine".