8681312 has 24 divisors (see below), whose sum is σ = 17336592. Its totient is φ = 4278400.

The previous prime is 8681311. The next prime is 8681317. The reversal of 8681312 is 2131868.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8681311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362 + ... + 4182.

It is an arithmetic number, because the mean of its divisors is an integer number (722358).

Almost surely, 2^8681312 is an apocalyptic number.

It is an amenable number.

8681312 is a deficient number, since it is larger than the sum of its proper divisors (8655280).

8681312 is a wasteful number, since it uses less digits than its factorization.

8681312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902 (or 3894 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 8681312 is about 2946.4066250265. The cubic root of 8681312 is about 205.5236424552.

The spelling of 8681312 in words is "eight million, six hundred eighty-one thousand, three hundred twelve".