866560447930 has 32 divisors (see below), whose sum is σ = 1563124285440. Its totient is φ = 345888144000.

The previous prime is 866560447903. The next prime is 866560447981. The reversal of 866560447930 is 39744065668.

It is a happy number.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 15 ways as a sum of consecutive naturals, for example, 9560182 + ... + 9650398.

It is an arithmetic number, because the mean of its divisors is an integer number (48847633920).

Almost surely, 2^866560447930 is an apocalyptic number.

866560447930 is a deficient number, since it is larger than the sum of its proper divisors (696563837510).

866560447930 is a wasteful number, since it uses less digits than its factorization.

866560447930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92254.

The product of its (nonzero) digits is 26127360, while the sum is 58.

The spelling of 866560447930 in words is "eight hundred sixty-six billion, five hundred sixty million, four hundred forty-seven thousand, nine hundred thirty".