866786463837066 has 8 divisors (see below), whose sum is σ = 1733572927674144. Its totient is φ = 288928821279020.

The previous prime is 866786463837011. The next prime is 866786463837067. The reversal of 866786463837066 is 660738364687668.

866786463837066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

866786463837066 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 866786463837066.

It is not an unprimeable number, because it can be changed into a prime (866786463837067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72232205319750 + ... + 72232205319761.

It is an arithmetic number, because the mean of its divisors is an integer number (216696615959268).

Almost surely, 2^{866786463837066} is an apocalyptic number.

866786463837066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

866786463837066 is a wasteful number, since it uses less digits than its factorization.

866786463837066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144464410639516.

The product of its (nonzero) digits is 42138206208, while the sum is 84.

The spelling of 866786463837066 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred sixty-three million, eight hundred thirty-seven thousand, sixty-six".