8671648 has 24 divisors (see below), whose sum is σ = 17397828. Its totient is φ = 4253184.

The previous prime is 8671639. The next prime is 8671669. The reversal of 8671648 is 8461768.

It can be written as a sum of positive squares in 2 ways, for example, as 8225424 + 446224 = 2868^2 + 668^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8671648.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861 + ... + 4252.

Almost surely, 2^8671648 is an apocalyptic number.

It is an amenable number.

8671648 is an abundant number, since it is smaller than the sum of its proper divisors (8726180).

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

8671648 is a wasteful number, since it uses less digits than its factorization.

8671648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176 (or 5168 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 8671648 is about 2944.7662046417. The cubic root of 8671648 is about 205.4473514545.

The spelling of 8671648 in words is "eight million, six hundred seventy-one thousand, six hundred forty-eight".