863166 has 16 divisors (see below), whose sum is σ = 1736064. Its totient is φ = 286104.

The previous prime is 863153. The next prime is 863179. The reversal of 863166 is 661368.

It is an interprime number because it is at equal distance from previous prime (863153) and next prime (863179).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1305 + ... + 1851.

It is an arithmetic number, because the mean of its divisors is an integer number (108504).

2⁸⁶³¹⁶⁶ is an apocalyptic number.

863166 is an abundant number, since it is smaller than the sum of its proper divisors (872898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

863166 is a wasteful number, since it uses less digits than its factorization.

863166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815.

The product of its digits is 5184, while the sum is 30.

The square root of 863166 is about 929.0672742057. The cubic root of 863166 is about 95.2134075931.

The spelling of 863166 in words is "eight hundred sixty-three thousand, one hundred sixty-six".