1066011643 has 2 divisors, whose sum is σ = 1066011644. Its totient is φ = 1066011642.

The previous prime is 1066011637. The next prime is 1066011691. The reversal of 1066011643 is 3461106601.

It is a weak prime.

It is an emirp because it is prime and its reverse (3461106601) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066011643 is a prime.

It is a super-2 number, since 2×1066011643² = 2272761646023118898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066011623) 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, 533005821 + 533005822.

It is an arithmetic number, because the mean of its divisors is an integer number (533005822).

Almost surely, 2^1066011643 is an apocalyptic number.

1066011643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066011643 is an equidigital number, since it uses as much as digits as its factorization.

1066011643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1066011643 is about 32649.8337361770. The cubic root of 1066011643 is about 1021.5367208597.

The spelling of 1066011643 in words is "one billion, sixty-six million, eleven thousand, six hundred forty-three".