660494405586 has 16 divisors (see below), whose sum is σ = 1321047607968. Its totient is φ = 220155002400.

The previous prime is 660494405579. The next prime is 660494405617. The reversal of 660494405586 is 685504494066.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303155 + ... + 2574006.

It is an arithmetic number, because the mean of its divisors is an integer number (82565475498).

Almost surely, 2^660494405586 is an apocalyptic number.

660494405586 is an abundant number, since it is smaller than the sum of its proper divisors (660553202382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660494405586 is a wasteful number, since it uses less digits than its factorization.

660494405586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899737.

The product of its (nonzero) digits is 24883200, while the sum is 57.

The spelling of 660494405586 in words is "six hundred sixty billion, four hundred ninety-four million, four hundred five thousand, five hundred eighty-six".