666023312 has 20 divisors (see below), whose sum is σ = 1304922060. Its totient is φ = 329269248.

The previous prime is 666023279. The next prime is 666023317. The reversal of 666023312 is 213320666.

666023312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 359633296 + 306390016 = 18964^2 + 17504^2 .

It is not an unprimeable number, because it can be changed into a prime (666023317) 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, 232433 + ... + 235280.

It is an arithmetic number, because the mean of its divisors is an integer number (65246103).

Almost surely, 2^666023312 is an apocalyptic number.

It is an amenable number.

666023312 is a deficient number, since it is larger than the sum of its proper divisors (638898748).

666023312 is a wasteful number, since it uses less digits than its factorization.

666023312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467810 (or 467804 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 666023312 is about 25807.4274580013. The cubic root of 666023312 is about 873.2993632586.

Adding to 666023312 its reverse (213320666), we get a palindrome (879343978).

The spelling of 666023312 in words is "six hundred sixty-six million, twenty-three thousand, three hundred twelve".