22666643 has 8 divisors (see below), whose sum is σ = 23224320. Its totient is φ = 22112200.

The previous prime is 22666621. The next prime is 22666663. The reversal of 22666643 is 34666622.

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 22666643 - 2¹⁴ = 22650259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22666663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19118 + ... + 20268.

It is an arithmetic number, because the mean of its divisors is an integer number (2903040).

Almost surely, 2^22666643 is an apocalyptic number.

22666643 is a deficient number, since it is larger than the sum of its proper divisors (557677).

22666643 is a wasteful number, since it uses less digits than its factorization.

22666643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617.

The product of its digits is 62208, while the sum is 35.

The square root of 22666643 is about 4760.9498001974. The cubic root of 22666643 is about 283.0060597952.

The spelling of 22666643 in words is "twenty-two million, six hundred sixty-six thousand, six hundred forty-three".