22164685 has 8 divisors (see below), whose sum is σ = 28162296. Its totient is φ = 16688640.

The previous prime is 22164679. The next prime is 22164689. The reversal of 22164685 is 58646122.

It can be written as a sum of positive squares in 4 ways, for example, as 393129 + 21771556 = 627^2 + 4666^2 .

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

It is not a de Polignac number, because 22164685 - 2³ = 22164677 is a prime.

It is a super-2 number, since 2×22164685² = 982546522298450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22164685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22164689) 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, 130296 + ... + 130465.

It is an arithmetic number, because the mean of its divisors is an integer number (3520287).

Almost surely, 2^22164685 is an apocalyptic number.

It is an amenable number.

22164685 is a deficient number, since it is larger than the sum of its proper divisors (5997611).

22164685 is a wasteful number, since it uses less digits than its factorization.

22164685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260783.

The product of its digits is 23040, while the sum is 34.

The square root of 22164685 is about 4707.9385085194. The cubic root of 22164685 is about 280.9013681862.

The spelling of 22164685 in words is "twenty-two million, one hundred sixty-four thousand, six hundred eighty-five".