8644668 has 24 divisors (see below), whose sum is σ = 20867280. Its totient is φ = 2782080.

The previous prime is 8644661. The next prime is 8644679. The reversal of 8644668 is 8664468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8644661) by changing a digit.

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, 12073 + ... + 12768.

It is an arithmetic number, because the mean of its divisors is an integer number (869470).

Almost surely, 2^8644668 is an apocalyptic number.

It is an amenable number.

8644668 is an abundant number, since it is smaller than the sum of its proper divisors (12222612).

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

8644668 is a wasteful number, since it uses less digits than its factorization.

8644668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24877 (or 24875 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 8644668 is about 2940.1816270428. The cubic root of 8644668 is about 205.2340614282.

The spelling of 8644668 in words is "eight million, six hundred forty-four thousand, six hundred sixty-eight".