2220320643 has 8 divisors (see below), whose sum is σ = 2963480256. Its totient is φ = 1478687400.

The previous prime is 2220320621. The next prime is 2220320651. The reversal of 2220320643 is 3460230222.

It is a happy number.

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

It is not a de Polignac number, because 2220320643 - 2⁹ = 2220320131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2220320603) 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, 378193 + ... + 384018.

It is an arithmetic number, because the mean of its divisors is an integer number (370435032).

Almost surely, 2^2220320643 is an apocalyptic number.

2220320643 is a deficient number, since it is larger than the sum of its proper divisors (743159613).

2220320643 is an equidigital number, since it uses as much as digits as its factorization.

2220320643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763185.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 2220320643 is about 47120.2784690413. The cubic root of 2220320643 is about 1304.5835526196.

Adding to 2220320643 its reverse (3460230222), we get a palindrome (5680550865).

The spelling of 2220320643 in words is "two billion, two hundred twenty million, three hundred twenty thousand, six hundred forty-three".