666045111 has 8 divisors (see below), whose sum is σ = 888689920. Its totient is φ = 443715192.

The previous prime is 666045097. The next prime is 666045113. The reversal of 666045111 is 111540666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666045111 - 2¹⁰ = 666044087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666045113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73741 + ... + 82278.

It is an arithmetic number, because the mean of its divisors is an integer number (111086240).

Almost surely, 2^666045111 is an apocalyptic number.

666045111 is a deficient number, since it is larger than the sum of its proper divisors (222644809).

666045111 is a wasteful number, since it uses less digits than its factorization.

666045111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157445.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 666045111 is about 25807.8497942002. The cubic root of 666045111 is about 873.3088908756.

Adding to 666045111 its reverse (111540666), we get a palindrome (777585777).

The spelling of 666045111 in words is "six hundred sixty-six million, forty-five thousand, one hundred eleven".