866046866 has 32 divisors (see below), whose sum is σ = 1386652800. Its totient is φ = 404507520.

The previous prime is 866046859. The next prime is 866046889. The reversal of 866046866 is 668640668.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1600556 + ... + 1601096.

It is an arithmetic number, because the mean of its divisors is an integer number (43332900).

Almost surely, 2^866046866 is an apocalyptic number.

866046866 is a deficient number, since it is larger than the sum of its proper divisors (520605934).

866046866 is a wasteful number, since it uses less digits than its factorization.

866046866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The square root of 866046866 is about 29428.6742141062. The cubic root of 866046866 is about 953.1921670068.

The spelling of 866046866 in words is "eight hundred sixty-six million, forty-six thousand, eight hundred sixty-six".