2220506 has 8 divisors (see below), whose sum is σ = 3526740. Its totient is φ = 1044928.

The previous prime is 2220503. The next prime is 2220521. The reversal of 2220506 is 6050222.

2220506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1985281 + 235225 = 1409^2 + 485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (2220503) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 32621 + ... + 32688.

2^2220506 is an apocalyptic number.

2220506 is a deficient number, since it is larger than the sum of its proper divisors (1306234).

2220506 is a wasteful number, since it uses less digits than its factorization.

2220506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65328.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2220506 is about 1490.1362353825. The cubic root of 2220506 is about 130.4619854728.

Adding to 2220506 its reverse (6050222), we get a palindrome (8270728).

The spelling of 2220506 in words is "two million, two hundred twenty thousand, five hundred six".