606616640666 has 64 divisors (see below), whose sum is σ = 979867392000. Its totient is φ = 281596444272.

The previous prime is 606616640621. The next prime is 606616640677. The reversal of 606616640666 is 666046616606.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150635345 + ... + 150639371.

It is an arithmetic number, because the mean of its divisors is an integer number (15310428000).

Almost surely, 2^606616640666 is an apocalyptic number.

606616640666 is a deficient number, since it is larger than the sum of its proper divisors (373250751334).

606616640666 is a wasteful number, since it uses less digits than its factorization.

606616640666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304 (or 4266 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 53.

The spelling of 606616640666 in words is "six hundred six billion, six hundred sixteen million, six hundred forty thousand, six hundred sixty-six".