869166 has 24 divisors (see below), whose sum is σ = 1904760. Its totient is φ = 286416.

The previous prime is 869153. The next prime is 869173. The reversal of 869166 is 661968.

869166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 869166.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869166.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1741 + ... + 2183.

It is an arithmetic number, because the mean of its divisors is an integer number (79365).

2⁸⁶⁹¹⁶⁶ is an apocalyptic number.

869166 is an abundant number, since it is smaller than the sum of its proper divisors (1035594).

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

869166 is a wasteful number, since it uses less digits than its factorization.

869166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 557 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 869166 is about 932.2907271876. The cubic root of 869166 is about 95.4335127438.

It can be divided in two parts, 869 and 166, that added together give a triangular number (1035 = T₄₅).

The spelling of 869166 in words is "eight hundred sixty-nine thousand, one hundred sixty-six".