22620066 has 48 divisors (see below), whose sum is σ = 53778816. Its totient is φ = 6321504.

The previous prime is 22620053. The next prime is 22620077. The reversal of 22620066 is 66002622.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13000 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (1120392).

Almost surely, 2^22620066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22620066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26889408).

22620066 is an abundant number, since it is smaller than the sum of its proper divisors (31158750).

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

22620066 is a wasteful number, since it uses less digits than its factorization.

22620066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22620066 is about 4756.0557187653. The cubic root of 22620066 is about 282.8120799990.

Adding to 22620066 its reverse (66002622), we get a palindrome (88622688).

The spelling of 22620066 in words is "twenty-two million, six hundred twenty thousand, sixty-six".