666044045 has 8 divisors (see below), whose sum is σ = 803270400. Its totient is φ = 530156880.

The previous prime is 666044033. The next prime is 666044047. The reversal of 666044045 is 540440666.

666044045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 666044045 - 2²⁴ = 649266829 is a prime.

It is a super-2 number, since 2×666044045² = 887229339759924050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666043996 and 666044014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666044047) 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, 333701 + ... + 335690.

It is an arithmetic number, because the mean of its divisors is an integer number (100408800).

Almost surely, 2^666044045 is an apocalyptic number.

It is an amenable number.

666044045 is a deficient number, since it is larger than the sum of its proper divisors (137226355).

666044045 is a wasteful number, since it uses less digits than its factorization.

666044045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669595.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 666044045 is about 25807.8291415609. The cubic root of 666044045 is about 873.3084249673.

It can be divided in two parts, 6660 and 44045, that added together give a palindrome (50705).

The spelling of 666044045 in words is "six hundred sixty-six million, forty-four thousand, forty-five".