22667 has 4 divisors (see below), whose sum is σ = 23880. Its totient is φ = 21456.

The previous prime is 22651. The next prime is 22669. The reversal of 22667 is 76622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22667 - 2⁴ = 22651 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10, base 12 and base 16.

It is not an unprimeable number, because it can be changed into a prime (22669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578 + ... + 615.

It is an arithmetic number, because the mean of its divisors is an integer number (5970).

2²²⁶⁶⁷ is an apocalyptic number.

22667 is a deficient number, since it is larger than the sum of its proper divisors (1213).

22667 is a wasteful number, since it uses less digits than its factorization.

22667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its digits is 1008, while the sum is 23.

The square root of 22667 is about 150.5556375564. Note that the first 3 decimals coincide. The cubic root of 22667 is about 28.3007545571.

The spelling of 22667 in words is "twenty-two thousand, six hundred sixty-seven".