866223740658277 has 8 divisors (see below), whose sum is σ = 917251470429336. Its totient is φ = 815204165563392.

The previous prime is 866223740658271. The next prime is 866223740658293. The reversal of 866223740658277 is 772856047322668.

It can be written as a sum of positive squares in 4 ways, for example, as 34450396346916 + 831773344311361 = 5869446^2 + 28840481^2 .

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 866223740658277 - 2²³ = 866223732269669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866223740658271) 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, 2038450338 + ... + 2038875235.

It is an arithmetic number, because the mean of its divisors is an integer number (114656433803667).

Almost surely, 2^{866223740658277} is an apocalyptic number.

It is an amenable number.

866223740658277 is a deficient number, since it is larger than the sum of its proper divisors (51027729771059).

866223740658277 is a wasteful number, since it uses less digits than its factorization.

866223740658277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077338087.

The product of its (nonzero) digits is 2275983360, while the sum is 73.

The spelling of 866223740658277 in words is "eight hundred sixty-six trillion, two hundred twenty-three billion, seven hundred forty million, six hundred fifty-eight thousand, two hundred seventy-seven".