866504030686 has 16 divisors (see below), whose sum is σ = 1536657395040. Its totient is φ = 358553391840.

The previous prime is 866504030669. The next prime is 866504030723. The reversal of 866504030686 is 686030405668.

It is a congruent number.

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, 1067122785 + ... + 1067123596.

It is an arithmetic number, because the mean of its divisors is an integer number (96041087190).

Almost surely, 2^866504030686 is an apocalyptic number.

866504030686 is a deficient number, since it is larger than the sum of its proper divisors (670153364354).

866504030686 is a wasteful number, since it uses less digits than its factorization.

866504030686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134246419.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 866504030686 in words is "eight hundred sixty-six billion, five hundred four million, thirty thousand, six hundred eighty-six".