2220785 has 16 divisors (see below), whose sum is σ = 3079296. Its totient is φ = 1506048.

The previous prime is 2220773. The next prime is 2220787. The reversal of 2220785 is 5870222.

2220785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2220785 - 2⁸ = 2220529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220787) 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 15 ways as a sum of consecutive naturals, for example, 3449 + ... + 4041.

It is an arithmetic number, because the mean of its divisors is an integer number (192456).

2^2220785 is an apocalyptic number.

It is an amenable number.

2220785 is a deficient number, since it is larger than the sum of its proper divisors (858511).

2220785 is a wasteful number, since it uses less digits than its factorization.

2220785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2220785 is about 1490.2298480436. The cubic root of 2220785 is about 130.4674492980.

The spelling of 2220785 in words is "two million, two hundred twenty thousand, seven hundred eighty-five".