22175664 has 80 divisors (see below), whose sum is σ = 67614720. Its totient is φ = 6128640.

The previous prime is 22175663. The next prime is 22175687. The reversal of 22175664 is 46657122.

It is not an unprimeable number, because it can be changed into a prime (22175663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9352 + ... + 11480.

It is an arithmetic number, because the mean of its divisors is an integer number (845184).

Almost surely, 2^22175664 is an apocalyptic number.

22175664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22175664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33807360).

22175664 is an abundant number, since it is smaller than the sum of its proper divisors (45439056).

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

22175664 is a wasteful number, since it uses less digits than its factorization.

22175664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2172 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 22175664 is about 4709.1043734451. The cubic root of 22175664 is about 280.9477408590.

The spelling of 22175664 in words is "twenty-two million, one hundred seventy-five thousand, six hundred sixty-four".