22706 has 4 divisors (see below), whose sum is σ = 34062. Its totient is φ = 11352.

The previous prime is 22699. The next prime is 22709. The reversal of 22706 is 60722.

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

It can be written as a sum of positive squares in only one way, i.e., 21025 + 1681 = 145^2 + 41^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22706.

It is not an unprimeable number, because it can be changed into a prime (22709) by changing a digit.

22706 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 5675 + ... + 5678.

2²²⁷⁰⁶ is an apocalyptic number.

22706 is a deficient number, since it is larger than the sum of its proper divisors (11356).

22706 is a wasteful number, since it uses less digits than its factorization.

22706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11355.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 22706 is about 150.6851021170. The cubic root of 22706 is about 28.3169763335.

The spelling of 22706 in words is "twenty-two thousand, seven hundred six".