1066706771 has 4 divisors (see below), whose sum is σ = 1148761152. Its totient is φ = 984652392.

The previous prime is 1066706731. The next prime is 1066706791. The reversal of 1066706771 is 1776076601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1066706771 - 2²² = 1062512467 is a prime.

It is a super-2 number, since 2×1066706771² = 2275726670594492882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066706731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41027171 + ... + 41027196.

It is an arithmetic number, because the mean of its divisors is an integer number (287190288).

Almost surely, 2^1066706771 is an apocalyptic number.

1066706771 is a deficient number, since it is larger than the sum of its proper divisors (82054381).

1066706771 is an equidigital number, since it uses as much as digits as its factorization.

1066706771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82054380.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 1066706771 is about 32660.4772010453. The cubic root of 1066706771 is about 1021.7587148346.

The spelling of 1066706771 in words is "one billion, sixty-six million, seven hundred six thousand, seven hundred seventy-one".