2666216 has 32 divisors (see below), whose sum is σ = 5840640. Its totient is φ = 1117248.

The previous prime is 2666201. The next prime is 2666221. The reversal of 2666216 is 6126662.

2666216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126 + ... + 3138.

It is an arithmetic number, because the mean of its divisors is an integer number (182520).

2^2666216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2920320).

2666216 is an abundant number, since it is smaller than the sum of its proper divisors (3174424).

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

2666216 is a wasteful number, since it uses less digits than its factorization.

2666216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1069 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 2666216 is about 1632.8551681028. The cubic root of 2666216 is about 138.6644425597.

It can be divided in two parts, 2666 and 216, that added together give a palindrome (2882).

The spelling of 2666216 in words is "two million, six hundred sixty-six thousand, two hundred sixteen".