8318646 has 64 divisors (see below), whose sum is σ = 21542400. Its totient is φ = 2330208.

The previous prime is 8318641. The next prime is 8318647. The reversal of 8318646 is 6468138.

It is a happy number.

8318646 is a `hidden beast` number, since 8 + 3 + 1 + 8 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8318646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8318641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22116 + ... + 22488.

It is an arithmetic number, because the mean of its divisors is an integer number (336600).

Almost surely, 2^8318646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8318646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10771200).

8318646 is an abundant number, since it is smaller than the sum of its proper divisors (13223754).

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

8318646 is a wasteful number, since it uses less digits than its factorization.

8318646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 444 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8318646 is about 2884.2063033008. The cubic root of 8318646 is about 202.6208880376.

The spelling of 8318646 in words is "eight million, three hundred eighteen thousand, six hundred forty-six".