6601111066 has 16 divisors (see below), whose sum is σ = 10856656800. Its totient is φ = 2985272080.

The previous prime is 6601111061. The next prime is 6601111103.

6601111066 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (6601111061) 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, 757216 + ... + 765883.

It is an arithmetic number, because the mean of its divisors is an integer number (678541050).

Almost surely, 2^6601111066 is an apocalyptic number.

6601111066 is a deficient number, since it is larger than the sum of its proper divisors (4255545734).

6601111066 is a wasteful number, since it uses less digits than its factorization.

6601111066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523309.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 6601111066 is about 81247.2218971209. The cubic root of 6601111066 is about 1875.8827076708.

It can be divided in two parts, 66011 and 11066, that added together give a palindrome (77077).

The spelling of 6601111066 in words is "six billion, six hundred one million, one hundred eleven thousand, sixty-six".