8644216 has 32 divisors (see below), whose sum is σ = 18656640. Its totient is φ = 3678048.

The previous prime is 8644213. The next prime is 8644231. The reversal of 8644216 is 6124468.

8644216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8644213) 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, 8655 + ... + 9601.

It is an arithmetic number, because the mean of its divisors is an integer number (583020).

Almost surely, 2^8644216 is an apocalyptic number.

It is an amenable number.

8644216 is an abundant number, since it is smaller than the sum of its proper divisors (10012424).

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

8644216 is a wasteful number, since it uses less digits than its factorization.

8644216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1119 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 8644216 is about 2940.1047600383. The cubic root of 8644216 is about 205.2304843711.

The spelling of 8644216 in words is "eight million, six hundred forty-four thousand, two hundred sixteen".