1066636859 has 2 divisors, whose sum is σ = 1066636860. Its totient is φ = 1066636858.

The previous prime is 1066636843. The next prime is 1066636867. The reversal of 1066636859 is 9586366601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1066636859 - 2⁴ = 1066636843 is a prime.

It is a super-3 number, since 3×1066636859³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1066636889) 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, 533318429 + 533318430.

It is an arithmetic number, because the mean of its divisors is an integer number (533318430).

Almost surely, 2^1066636859 is an apocalyptic number.

1066636859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066636859 is an equidigital number, since it uses as much as digits as its factorization.

1066636859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 1066636859 is about 32659.4068990850. The cubic root of 1066636859 is about 1021.7363923127.

The spelling of 1066636859 in words is "one billion, sixty-six million, six hundred thirty-six thousand, eight hundred fifty-nine".