1066106309 has 2 divisors, whose sum is σ = 1066106310. Its totient is φ = 1066106308.

The previous prime is 1066106303. The next prime is 1066106317. The reversal of 1066106309 is 9036016601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942674209 + 123432100 = 30703^2 + 11110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066106309 is a prime.

It is a super-2 number, since 2×1066106309² = 2273165324179206962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066106303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533053154 + 533053155.

It is an arithmetic number, because the mean of its divisors is an integer number (533053155).

Almost surely, 2^1066106309 is an apocalyptic number.

It is an amenable number.

1066106309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066106309 is an equidigital number, since it uses as much as digits as its factorization.

1066106309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1066106309 is about 32651.2834204109. The cubic root of 1066106309 is about 1021.5669587824.

The spelling of 1066106309 in words is "one billion, sixty-six million, one hundred six thousand, three hundred nine".