2216775 has 24 divisors (see below), whose sum is σ = 3999744. Its totient is φ = 1074400.

The previous prime is 2216761. The next prime is 2216777. The reversal of 2216775 is 5776122.

2216775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2216775 - 2⁴ = 2216759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216777) 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 23 ways as a sum of consecutive naturals, for example, 519 + ... + 2168.

It is an arithmetic number, because the mean of its divisors is an integer number (166656).

2^2216775 is an apocalyptic number.

2216775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2216775 is a deficient number, since it is larger than the sum of its proper divisors (1782969).

2216775 is a wasteful number, since it uses less digits than its factorization.

2216775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711 (or 2706 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 2216775 is about 1488.8838101074. The cubic root of 2216775 is about 130.3888750279.

It can be divided in two parts, 221 and 6775, that added together give a palindrome (6996).

The spelling of 2216775 in words is "two million, two hundred sixteen thousand, seven hundred seventy-five".