22318664 has 16 divisors (see below), whose sum is σ = 41924400. Its totient is φ = 11138832.

The previous prime is 22318663. The next prime is 22318691. The reversal of 22318664 is 46681322.

It is a super-3 number, since 3×22318664³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22318664.

It is not an unprimeable number, because it can be changed into a prime (22318663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2699 + ... + 7205.

It is an arithmetic number, because the mean of its divisors is an integer number (2620275).

Almost surely, 2^22318664 is an apocalyptic number.

It is an amenable number.

22318664 is a deficient number, since it is larger than the sum of its proper divisors (19605736).

22318664 is a wasteful number, since it uses less digits than its factorization.

22318664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132 (or 5128 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 22318664 is about 4724.2633288165. The cubic root of 22318664 is about 281.5503455515.

Adding to 22318664 its reverse (46681322), we get a palindrome (68999986).

The spelling of 22318664 in words is "twenty-two million, three hundred eighteen thousand, six hundred sixty-four".