866168 has 8 divisors (see below), whose sum is σ = 1624080. Its totient is φ = 433080.

The previous prime is 866161. The next prime is 866183. The reversal of 866168 is 861668.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866161) by changing a digit.

866168 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54128 + ... + 54143.

It is an arithmetic number, because the mean of its divisors is an integer number (203010).

2⁸⁶⁶¹⁶⁸ is an apocalyptic number.

It is an amenable number.

866168 is a deficient number, since it is larger than the sum of its proper divisors (757912).

866168 is a wasteful number, since it uses less digits than its factorization.

866168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108277 (or 108273 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 866168 is about 930.6814707514. The cubic root of 866168 is about 95.3236605940.

The spelling of 866168 in words is "eight hundred sixty-six thousand, one hundred sixty-eight".