22685 has 8 divisors (see below), whose sum is σ = 29400. Its totient is φ = 16704.
The previous prime is 22679. The next prime is 22691. The reversal of 22685 is 58622.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (22679) and next prime (22691).
It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 21316 = 37^2 + 146^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 22685 - 24 = 22669 is a prime.
It is a plaindrome in base 16.
It is a nialpdrome in base 13.
It is a self number, because there is not a number n which added to its sum of digits gives 22685.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110 + ... + 239.
It is an arithmetic number, because the mean of its divisors is an integer number (3675).
222685 is an apocalyptic number.
22685 is the 107-th centered square number.
It is an amenable number.
22685 is a deficient number, since it is larger than the sum of its proper divisors (6715).
22685 is a wasteful number, since it uses less digits than its factorization.
22685 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 367.
The product of its digits is 960, while the sum is 23.
The square root of 22685 is about 150.6154042587. The cubic root of 22685 is about 28.3082438410.
Subtracting 22685 from its reverse (58622), we obtain a cube (35937 = 333).
It can be divided in two parts, 22 and 685, that added together give a palindrome (707).
The spelling of 22685 in words is "twenty-two thousand, six hundred eighty-five".
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