22665173 has 4 divisors (see below), whose sum is σ = 22679148. Its totient is φ = 22651200.

The previous prime is 22665163. The next prime is 22665191. The reversal of 22665173 is 37156622.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12974404 + 9690769 = 3602^2 + 3113^2 .

It is a cyclic number.

It is not a de Polignac number, because 22665173 - 2⁶ = 22665109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22665103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4178 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (5669787).

Almost surely, 2^22665173 is an apocalyptic number.

It is an amenable number.

22665173 is a deficient number, since it is larger than the sum of its proper divisors (13975).

22665173 is a wasteful number, since it uses less digits than its factorization.

22665173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13974.

The product of its digits is 15120, while the sum is 32.

The square root of 22665173 is about 4760.7954167345. The cubic root of 22665173 is about 282.9999417315. Note that the first 4 decimals are identical.

The spelling of 22665173 in words is "twenty-two million, six hundred sixty-five thousand, one hundred seventy-three".