1066646039 has 2 divisors, whose sum is σ = 1066646040. Its totient is φ = 1066646038.

The previous prime is 1066646023. The next prime is 1066646069. The reversal of 1066646039 is 9306466601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1066646039 - 2⁴ = 1066646023 is a prime.

It is a super-2 number, since 2×1066646039² = 2275467545028779042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066645987 and 1066646005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066646069) 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, 533323019 + 533323020.

It is an arithmetic number, because the mean of its divisors is an integer number (533323020).

Almost surely, 2^1066646039 is an apocalyptic number.

1066646039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066646039 is an equidigital number, since it uses as much as digits as its factorization.

1066646039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 1066646039 is about 32659.5474402203. The cubic root of 1066646039 is about 1021.7393234925.

The spelling of 1066646039 in words is "one billion, sixty-six million, six hundred forty-six thousand, thirty-nine".