868563281 has 8 divisors (see below), whose sum is σ = 874398720. Its totient is φ = 862737552.

The previous prime is 868563263. The next prime is 868563299. The reversal of 868563281 is 182365868.

868563281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (868563263) and next prime (868563299).

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 868563281 - 2⁶ = 868563217 is a prime.

It is a super-2 number, since 2×868563281² = 1508804346202969922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (868563181) 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, 286190 + ... + 289208.

It is an arithmetic number, because the mean of its divisors is an integer number (109299840).

Almost surely, 2^868563281 is an apocalyptic number.

It is an amenable number.

868563281 is a deficient number, since it is larger than the sum of its proper divisors (5835439).

868563281 is a wasteful number, since it uses less digits than its factorization.

868563281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855.

The product of its digits is 552960, while the sum is 47.

The square root of 868563281 is about 29471.3976763913. The cubic root of 868563281 is about 954.1144833874.

The spelling of 868563281 in words is "eight hundred sixty-eight million, five hundred sixty-three thousand, two hundred eighty-one".