712006666 has 32 divisors (see below), whose sum is σ = 1289571840. Its totient is φ = 288347136.

The previous prime is 712006661. The next prime is 712006679. The reversal of 712006666 is 666600217.

It is not an unprimeable number, because it can be changed into a prime (712006661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426 + ... + 37738.

It is an arithmetic number, because the mean of its divisors is an integer number (40299120).

Almost surely, 2^712006666 is an apocalyptic number.

712006666 is a deficient number, since it is larger than the sum of its proper divisors (577565174).

712006666 is a wasteful number, since it uses less digits than its factorization.

712006666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37398.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 712006666 is about 26683.4530374163. The cubic root of 712006666 is about 892.9518058115.

The spelling of 712006666 in words is "seven hundred twelve million, six thousand, six hundred sixty-six".