1066235899 has 2 divisors, whose sum is σ = 1066235900. Its totient is φ = 1066235898.

The previous prime is 1066235893. The next prime is 1066235959. The reversal of 1066235899 is 9985326601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1066235899 - 2¹⁷ = 1066104827 is a prime.

It is a super-2 number, since 2×1066235899² = 2273717984632676402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066235893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533117949 + 533117950.

It is an arithmetic number, because the mean of its divisors is an integer number (533117950).

Almost surely, 2^1066235899 is an apocalyptic number.

1066235899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066235899 is an equidigital number, since it uses as much as digits as its factorization.

1066235899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 1066235899 is about 32653.2678150289. The cubic root of 1066235899 is about 1021.6083491195.

The spelling of 1066235899 in words is "one billion, sixty-six million, two hundred thirty-five thousand, eight hundred ninety-nine".