2166468 has 12 divisors (see below), whose sum is σ = 5055120. Its totient is φ = 722152.

The previous prime is 2166467. The next prime is 2166509. The reversal of 2166468 is 8646612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×2166468³ = 30505495991833365696, which contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2166467) 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, 90258 + ... + 90281.

It is an arithmetic number, because the mean of its divisors is an integer number (421260).

2^2166468 is an apocalyptic number.

It is an amenable number.

2166468 is an abundant number, since it is smaller than the sum of its proper divisors (2888652).

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

2166468 is a wasteful number, since it uses less digits than its factorization.

2166468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180546 (or 180544 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 2166468 is about 1471.8926591297. The cubic root of 2166468 is about 129.3949795277.

The spelling of 2166468 in words is "two million, one hundred sixty-six thousand, four hundred sixty-eight".