866485883 has 4 divisors (see below), whose sum is σ = 866569560. Its totient is φ = 866402208.

The previous prime is 866485811. The next prime is 866485889. The reversal of 866485883 is 388584668.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 866485883 - 2¹² = 866481787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866485889) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23678 + ... + 47891.

It is an arithmetic number, because the mean of its divisors is an integer number (216642390).

Almost surely, 2^866485883 is an apocalyptic number.

866485883 is a deficient number, since it is larger than the sum of its proper divisors (83677).

866485883 is a wasteful number, since it uses less digits than its factorization.

866485883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83676.

The product of its digits is 8847360, while the sum is 56.

The square root of 866485883 is about 29436.1322697123. The cubic root of 866485883 is about 953.3532040484.

The spelling of 866485883 in words is "eight hundred sixty-six million, four hundred eighty-five thousand, eight hundred eighty-three".