660606505606 has 16 divisors (see below), whose sum is σ = 1024224601680. Its totient is φ = 319381858080.

The previous prime is 660606505591. The next prime is 660606505661. The reversal of 660606505606 is 606505606066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45881001 + ... + 45895396.

It is an arithmetic number, because the mean of its divisors is an integer number (64014037605).

Almost surely, 2^660606505606 is an apocalyptic number.

660606505606 is a deficient number, since it is larger than the sum of its proper divisors (363618096074).

660606505606 is a wasteful number, since it uses less digits than its factorization.

660606505606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91776519.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 660606505606 in words is "six hundred sixty billion, six hundred six million, five hundred five thousand, six hundred six".