866167 has 4 divisors (see below), whose sum is σ = 917136. Its totient is φ = 815200.

The previous prime is 866161. The next prime is 866183. The reversal of 866167 is 761668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 866167 - 2¹¹ = 864119 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 (866161) 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, 25459 + ... + 25492.

It is an arithmetic number, because the mean of its divisors is an integer number (229284).

2⁸⁶⁶¹⁶⁷ is an apocalyptic number.

866167 is a deficient number, since it is larger than the sum of its proper divisors (50969).

866167 is a wasteful number, since it uses less digits than its factorization.

866167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50968.

The product of its digits is 12096, while the sum is 34.

The square root of 866167 is about 930.6809335105. The cubic root of 866167 is about 95.3236239100.

The spelling of 866167 in words is "eight hundred sixty-six thousand, one hundred sixty-seven".