666484666 has 8 divisors (see below), whose sum is σ = 1000962144. Its totient is φ = 332830620.

The previous prime is 666484661. The next prime is 666484681.

666484666 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (666484661) 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, 203830 + ... + 207073.

It is an arithmetic number, because the mean of its divisors is an integer number (125120268).

Almost surely, 2^666484666 is an apocalyptic number.

666484666 is a deficient number, since it is larger than the sum of its proper divisors (334477478).

666484666 is a wasteful number, since it uses less digits than its factorization.

666484666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411716.

The product of its digits is 5971968, while the sum is 52.

The square root of 666484666 is about 25816.3643063852. The cubic root of 666484666 is about 873.5009613875.

It can be divided in two parts, 666484 and 666, that multiplied together give a palindrome (443878344).

The spelling of 666484666 in words is "six hundred sixty-six million, four hundred eighty-four thousand, six hundred sixty-six".