8641312 has 36 divisors (see below), whose sum is σ = 17641638. Its totient is φ = 4166400.

The previous prime is 8641309. The next prime is 8641319. The reversal of 8641312 is 2131468.

It can be written as a sum of positive squares in only one way, i.e., 6780816 + 1860496 = 2604^2 + 1364^2 .

It is not an unprimeable number, because it can be changed into a prime (8641319) 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, 30612 + ... + 30892.

Almost surely, 2^8641312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8641312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8820819).

8641312 is an abundant number, since it is smaller than the sum of its proper divisors (9000326).

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

8641312 is a wasteful number, since it uses less digits than its factorization.

8641312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 314 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 8641312 is about 2939.6108586002. The cubic root of 8641312 is about 205.2074995961.

The spelling of 8641312 in words is "eight million, six hundred forty-one thousand, three hundred twelve".