866911853 has 4 divisors (see below), whose sum is σ = 867196128. Its totient is φ = 866627580.

The previous prime is 866911817. The next prime is 866911867. The reversal of 866911853 is 358119668.

866911853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 866911853 - 2⁸ = 866911597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 866911798 and 866911807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866911153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137513 + ... + 143678.

It is an arithmetic number, because the mean of its divisors is an integer number (216799032).

Almost surely, 2^866911853 is an apocalyptic number.

It is an amenable number.

866911853 is a deficient number, since it is larger than the sum of its proper divisors (284275).

866911853 is a wasteful number, since it uses less digits than its factorization.

866911853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284274.

The product of its digits is 311040, while the sum is 47.

The square root of 866911853 is about 29443.3668760894. The cubic root of 866911853 is about 953.5094032985.

The spelling of 866911853 in words is "eight hundred sixty-six million, nine hundred eleven thousand, eight hundred fifty-three".