866882686691 has 8 divisors (see below), whose sum is σ = 991320985440. Its totient is φ = 742593866688.

The previous prime is 866882686667. The next prime is 866882686693. The reversal of 866882686691 is 196686288668.

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

It is a cyclic number.

It is not a de Polignac number, because 866882686691 - 2²⁶ = 866815577827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866882686693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37357256 + ... + 37380453.

It is an arithmetic number, because the mean of its divisors is an integer number (123915123180).

Almost surely, 2^866882686691 is an apocalyptic number.

866882686691 is a deficient number, since it is larger than the sum of its proper divisors (124438298749).

866882686691 is a wasteful number, since it uses less digits than its factorization.

866882686691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74739373.

The product of its digits is 573308928, while the sum is 74.

The spelling of 866882686691 in words is "eight hundred sixty-six billion, eight hundred eighty-two million, six hundred eighty-six thousand, six hundred ninety-one".