866912 has 12 divisors (see below), whose sum is σ = 1706796. Its totient is φ = 433440.

The previous prime is 866909. The next prime is 866917. The reversal of 866912 is 219668.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 27091 = 866912 / (8 + 6 + 6 + 9 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13514 + ... + 13577.

It is an arithmetic number, because the mean of its divisors is an integer number (142233).

2⁸⁶⁶⁹¹² is an apocalyptic number.

It is an amenable number.

866912 is a deficient number, since it is larger than the sum of its proper divisors (839884).

866912 is a wasteful number, since it uses less digits than its factorization.

866912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27101 (or 27093 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 866912 is about 931.0810920645. The cubic root of 866912 is about 95.3509457193.

The spelling of 866912 in words is "eight hundred sixty-six thousand, nine hundred twelve".