22643 has 2 divisors, whose sum is σ = 22644. Its totient is φ = 22642.

The previous prime is 22639. The next prime is 22651. The reversal of 22643 is 34622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22643 - 2² = 22639 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 2⁹ + 6⁴ + 4⁵ + 3⁹ .

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22643.

It is not a weakly prime, because it can be changed into another prime (22613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321 + 11322.

It is an arithmetic number, because the mean of its divisors is an integer number (11322).

2²²⁶⁴³ is an apocalyptic number.

22643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22643 is an equidigital number, since it uses as much as digits as its factorization.

22643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 17.

The square root of 22643 is about 150.4759116935. The cubic root of 22643 is about 28.2907626750.

The spelling of 22643 in words is "twenty-two thousand, six hundred forty-three".