666585412 has 12 divisors (see below), whose sum is σ = 1183935760. Its totient is φ = 328318056.

The previous prime is 666585401. The next prime is 666585431. The reversal of 666585412 is 214585666.

666585412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×666585412² = 888672222982419488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243362 + ... + 1243897.

Almost surely, 2^666585412 is an apocalyptic number.

It is an amenable number.

666585412 is a deficient number, since it is larger than the sum of its proper divisors (517350348).

666585412 is a wasteful number, since it uses less digits than its factorization.

666585412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487330 (or 2487328 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 666585412 is about 25818.3154369142. The cubic root of 666585412 is about 873.5449720496.

The spelling of 666585412 in words is "six hundred sixty-six million, five hundred eighty-five thousand, four hundred twelve".