1066682909 has 2 divisors, whose sum is σ = 1066682910. Its totient is φ = 1066682908.

The previous prime is 1066682863. The next prime is 1066682923. The reversal of 1066682909 is 9092866601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719419684 + 347263225 = 26822^2 + 18635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066682909 - 2¹⁶ = 1066617373 is a prime.

It is a super-2 number, since 2×1066682909² = 2275624856705404562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066682989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533341454 + 533341455.

It is an arithmetic number, because the mean of its divisors is an integer number (533341455).

Almost surely, 2^1066682909 is an apocalyptic number.

It is an amenable number.

1066682909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066682909 is an equidigital number, since it uses as much as digits as its factorization.

1066682909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1066682909 is about 32660.1118950931. Note that the first 3 decimals coincide. The cubic root of 1066682909 is about 1021.7510959373.

The spelling of 1066682909 in words is "one billion, sixty-six million, six hundred eighty-two thousand, nine hundred nine".