22646 has 12 divisors (see below), whose sum is σ = 37332. Its totient is φ = 10296.

The previous prime is 22643. The next prime is 22651. The reversal of 22646 is 64622.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22646.

It is not an unprimeable number, because it can be changed into a prime (22643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 305 + ... + 371.

It is an arithmetic number, because the mean of its divisors is an integer number (3111).

2²²⁶⁴⁶ is an apocalyptic number.

22646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22646 is a deficient number, since it is larger than the sum of its proper divisors (14686).

22646 is a wasteful number, since it uses less digits than its factorization.

22646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 82 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 22646 is about 150.4858797363. The cubic root of 22646 is about 28.2920120463.

It can be divided in two parts, 226 and 46, that added together give a palindrome (272).

The spelling of 22646 in words is "twenty-two thousand, six hundred forty-six".