866322845 has 6 divisors (see below), whose sum is σ = 1039666398. Its totient is φ = 693005624.

The previous prime is 866322833. The next prime is 866322851. The reversal of 866322845 is 548223668.

866322845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 693058276 + 173264569 = 26326^2 + 13163^2 .

It is not a de Polignac number, because 866322845 - 2¹² = 866318749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 866322796 and 866322805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59234 + ... + 72396.

It is an arithmetic number, because the mean of its divisors is an integer number (173277733).

Almost surely, 2^866322845 is an apocalyptic number.

It is an amenable number.

866322845 is a deficient number, since it is larger than the sum of its proper divisors (173343553).

866322845 is an frugal number, since it uses more digits than its factorization.

866322845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26331 (or 13168 counting only the distinct ones).

The product of its digits is 552960, while the sum is 44.

The square root of 866322845 is about 29433.3627878297. The cubic root of 866322845 is about 953.2934059788.

The spelling of 866322845 in words is "eight hundred sixty-six million, three hundred twenty-two thousand, eight hundred forty-five".