666112012 has 24 divisors (see below), whose sum is σ = 1193008320. Its totient is φ = 325282560.

The previous prime is 666112001. The next prime is 666112063. The reversal of 666112012 is 210211666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92212 + ... + 99172.

It is an arithmetic number, because the mean of its divisors is an integer number (49708680).

Almost surely, 2^666112012 is an apocalyptic number.

It is an amenable number.

666112012 is a deficient number, since it is larger than the sum of its proper divisors (526896308).

666112012 is a wasteful number, since it uses less digits than its factorization.

666112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7521 (or 7519 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 666112012 is about 25809.1458983051. The cubic root of 666112012 is about 873.3381297770.

Adding to 666112012 its reverse (210211666), we get a palindrome (876323678).

The spelling of 666112012 in words is "six hundred sixty-six million, one hundred twelve thousand, twelve".