6660445111 has 8 divisors (see below), whose sum is σ = 6688656000. Its totient is φ = 6632260320.

The previous prime is 6660445093. The next prime is 6660445171. The reversal of 6660445111 is 1115440666.

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

It is a cyclic number.

It is not a de Polignac number, because 6660445111 - 2⁹ = 6660444599 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 (6660445171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635290 + ... + 645688.

It is an arithmetic number, because the mean of its divisors is an integer number (836082000).

Almost surely, 2^6660445111 is an apocalyptic number.

6660445111 is a deficient number, since it is larger than the sum of its proper divisors (28210889).

6660445111 is a wasteful number, since it uses less digits than its factorization.

6660445111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13049.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 6660445111 is about 81611.5501078126. The cubic root of 6660445111 is about 1881.4864047368.

Adding to 6660445111 its reverse (1115440666), we get a palindrome (7775885777).

The spelling of 6660445111 in words is "six billion, six hundred sixty million, four hundred forty-five thousand, one hundred eleven".