666583404174 has 48 divisors (see below), whose sum is σ = 1507171895424. Its totient is φ = 212517795600.

The previous prime is 666583404161. The next prime is 666583404181. The reversal of 666583404174 is 471404385666.

It is a self number, because there is not a number n which added to its sum of digits gives 666583404174.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6211029 + ... + 6317439.

It is an arithmetic number, because the mean of its divisors is an integer number (31399414488).

Almost surely, 2^666583404174 is an apocalyptic number.

666583404174 is an abundant number, since it is smaller than the sum of its proper divisors (840588491250).

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

666583404174 is a wasteful number, since it uses less digits than its factorization.

666583404174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121573 (or 121570 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 666583404174 in words is "six hundred sixty-six billion, five hundred eighty-three million, four hundred four thousand, one hundred seventy-four".