22245666 has 8 divisors (see below), whose sum is σ = 44491344. Its totient is φ = 7415220.

The previous prime is 22245661. The next prime is 22245667. The reversal of 22245666 is 66654222.

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

22245666 is an admirable number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22245661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1853800 + ... + 1853811.

It is an arithmetic number, because the mean of its divisors is an integer number (5561418).

Almost surely, 2^22245666 is an apocalyptic number.

22245666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22245666 is a wasteful number, since it uses less digits than its factorization.

22245666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707616.

The product of its digits is 34560, while the sum is 33.

The square root of 22245666 is about 4716.5311405735. The cubic root of 22245666 is about 281.2430532605.

Adding to 22245666 its reverse (66654222), we get a palindrome (88899888).

The spelling of 22245666 in words is "twenty-two million, two hundred forty-five thousand, six hundred sixty-six".