8449668 has 18 divisors (see below), whose sum is σ = 21358974. Its totient is φ = 2816544.

The previous prime is 8449667. The next prime is 8449673. The reversal of 8449668 is 8669448.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6594624 + 1855044 = 2568^2 + 1362^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (8449667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117321 + ... + 117392.

Almost surely, 2^8449668 is an apocalyptic number.

It is an amenable number.

8449668 is an abundant number, since it is smaller than the sum of its proper divisors (12909306).

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

8449668 is a wasteful number, since it uses less digits than its factorization.

8449668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234723 (or 234718 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 8449668 is about 2906.8312644528. The cubic root of 8449668 is about 203.6791380412.

The spelling of 8449668 in words is "eight million, four hundred forty-nine thousand, six hundred sixty-eight".