2022645 has 32 divisors (see below), whose sum is σ = 3502080. Its totient is φ = 993600.

The previous prime is 2022641. The next prime is 2022649. The reversal of 2022645 is 5462202.

It is an interprime number because it is at equal distance from previous prime (2022641) and next prime (2022649).

It is not a de Polignac number, because 2022645 - 2² = 2022641 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 0 + 2⁹ + 2¹¹ + 6⁴ + 4⁸ + 5⁹ .

It is a Curzon number.

2022645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13320 + ... + 13470.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2^2022645 is an apocalyptic number.

It is an amenable number.

2022645 is a deficient number, since it is larger than the sum of its proper divisors (1479435).

2022645 is a wasteful number, since it uses less digits than its factorization.

2022645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2022645 is about 1422.1972437043. The cubic root of 2022645 is about 126.4658367233.

Adding to 2022645 its reverse (5462202), we get a palindrome (7484847).

The spelling of 2022645 in words is "two million, twenty-two thousand, six hundred forty-five".