9668 has 6 divisors (see below), whose sum is σ = 16926.
Its totient is φ = 4832.
The previous prime is 9661. The next prime is 9677. The reversal of 9668 is 8669.
Subtracting from 9668 its reverse (8669), we obtain a palindrome (999).
It can be written as a sum of positive squares in only one way, i.e., 9604 + 64 = 98^2 + 8^2
It is a self number, because there is not a number n which added to its sum of digits gives 9668.
It is not an unprimeable number, because it can be changed into a prime (9661) by changing a digit.
9668 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1205 + ... + 1212.
It is an arithmetic number, because the mean of its divisors is an integer number (2821).
29668 is an apocalyptic number.
It is an amenable number.
9668 is a deficient number, since it is larger than the sum of its proper divisors (7258).
9668 is a wasteful number, since it uses less digits than its factorization.
9668 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2421 (or 2419 counting only the distinct ones).
The product of its digits is 2592, while the sum is 29.
The square root of 9668 is about 98.3259884263.
The cubic root of 9668 is about 21.3032344637.
The spelling of 9668 in words is "nine thousand, six hundred sixty-eight".