8641864 has 32 divisors (see below), whose sum is σ = 20203200. Its totient is φ = 3366720.

The previous prime is 8641819. The next prime is 8641873. The reversal of 8641864 is 4681468.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6399 + ... + 7630.

It is an arithmetic number, because the mean of its divisors is an integer number (631350).

Almost surely, 2^8641864 is an apocalyptic number.

It is an amenable number.

8641864 is an abundant number, since it is smaller than the sum of its proper divisors (11561336).

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

8641864 is a wasteful number, since it uses less digits than its factorization.

8641864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14053 (or 14049 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 8641864 is about 2939.7047470792. The cubic root of 8641864 is about 205.2118689992.

The spelling of 8641864 in words is "eight million, six hundred forty-one thousand, eight hundred sixty-four".