2220066 has 24 divisors (see below), whose sum is σ = 4977180. Its totient is φ = 714336.

The previous prime is 2220059. The next prime is 2220073. The reversal of 2220066 is 6600222.

It is an interprime number because it is at equal distance from previous prime (2220059) and next prime (2220073).

It can be written as a sum of positive squares in 2 ways, for example, as 2117025 + 103041 = 1455^2 + 321^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1605 + ... + 2648.

2^2220066 is an apocalyptic number.

2220066 is an abundant number, since it is smaller than the sum of its proper divisors (2757114).

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

2220066 is a wasteful number, since it uses less digits than its factorization.

2220066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2220066 is about 1489.9885905603. The cubic root of 2220066 is about 130.4533677575.

Adding to 2220066 its reverse (6600222), we get a palindrome (8820288).

The spelling of 2220066 in words is "two million, two hundred twenty thousand, sixty-six".