666587000785666 has 16 divisors (see below), whose sum is σ = 1004066161902720. Its totient is φ = 331898285874960.

The previous prime is 666587000785609. The next prime is 666587000785691.

666587000785666 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 666587000785592 and 666587000785601.

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, 296654161 + ... + 298892731.

It is an arithmetic number, because the mean of its divisors is an integer number (62754135118920).

Almost surely, 2^{666587000785666} is an apocalyptic number.

666587000785666 is a deficient number, since it is larger than the sum of its proper divisors (337479161117054).

666587000785666 is a wasteful number, since it uses less digits than its factorization.

666587000785666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861769.

The product of its (nonzero) digits is 3657830400, while the sum is 76.

The spelling of 666587000785666 in words is "six hundred sixty-six trillion, five hundred eighty-seven billion, seven hundred eighty-five thousand, six hundred sixty-six".