666044312 has 8 divisors (see below), whose sum is σ = 1248833100. Its totient is φ = 333022152.

The previous prime is 666044287. The next prime is 666044317. The reversal of 666044312 is 213440666.

666044312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×666044312³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666044317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41627762 + ... + 41627777.

Almost surely, 2^666044312 is an apocalyptic number.

It is an amenable number.

666044312 is a deficient number, since it is larger than the sum of its proper divisors (582788788).

666044312 is a wasteful number, since it uses less digits than its factorization.

666044312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83255545 (or 83255541 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 666044312 is about 25807.8343144093. The cubic root of 666044312 is about 873.3085416630.

Adding to 666044312 its reverse (213440666), we get a palindrome (879484978).

The spelling of 666044312 in words is "six hundred sixty-six million, forty-four thousand, three hundred twelve".