2122645 has 8 divisors (see below), whose sum is σ = 2911104. Its totient is φ = 1455504.

The previous prime is 2122633. The next prime is 2122649. The reversal of 2122645 is 5462212.

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

It is a cyclic number.

It is not a de Polignac number, because 2122645 - 2¹⁷ = 1991573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30289 + ... + 30358.

It is an arithmetic number, because the mean of its divisors is an integer number (363888).

2^2122645 is an apocalyptic number.

It is an amenable number.

2122645 is a deficient number, since it is larger than the sum of its proper divisors (788459).

2122645 is an equidigital number, since it uses as much as digits as its factorization.

2122645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60659.

The product of its digits is 960, while the sum is 22.

The square root of 2122645 is about 1456.9299914546. The cubic root of 2122645 is about 128.5165688941.

Adding to 2122645 its reverse (5462212), we get a palindrome (7584857).

The spelling of 2122645 in words is "two million, one hundred twenty-two thousand, six hundred forty-five".