66884027866 has 8 divisors (see below), whose sum is σ = 103562365824. Its totient is φ = 32363239260.

The previous prime is 66884027851. The next prime is 66884027893. The reversal of 66884027866 is 66872048866.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 539387260 + ... + 539387383.

It is an arithmetic number, because the mean of its divisors is an integer number (12945295728).

Almost surely, 2^66884027866 is an apocalyptic number.

66884027866 is a deficient number, since it is larger than the sum of its proper divisors (36678337958).

66884027866 is a wasteful number, since it uses less digits than its factorization.

66884027866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078774676.

The product of its (nonzero) digits is 37158912, while the sum is 61.

The spelling of 66884027866 in words is "sixty-six billion, eight hundred eighty-four million, twenty-seven thousand, eight hundred sixty-six".