22665143 has 8 divisors (see below), whose sum is σ = 23826528. Its totient is φ = 21518464.

The previous prime is 22665121. The next prime is 22665151. The reversal of 22665143 is 34156622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22665143 - 2¹² = 22661047 is a prime.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446 + ... + 6747.

It is an arithmetic number, because the mean of its divisors is an integer number (2978316).

Almost surely, 2^22665143 is an apocalyptic number.

22665143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22665143 is a deficient number, since it is larger than the sum of its proper divisors (1161385).

22665143 is a wasteful number, since it uses less digits than its factorization.

22665143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7353.

The product of its digits is 8640, while the sum is 29.

The square root of 22665143 is about 4760.7922659994. The cubic root of 22665143 is about 282.9998168703. Note that the first 3 decimals are identical.

The spelling of 22665143 in words is "twenty-two million, six hundred sixty-five thousand, one hundred forty-three".