8663972 has 12 divisors (see below), whose sum is σ = 15332940. Its totient is φ = 4283136.

The previous prime is 8663969. The next prime is 8663987. The reversal of 8663972 is 2793668.

It can be written as a sum of positive squares in 2 ways, for example, as 6180196 + 2483776 = 2486^2 + 1576^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11813 + ... + 12524.

It is an arithmetic number, because the mean of its divisors is an integer number (1277745).

Almost surely, 2^8663972 is an apocalyptic number.

It is an amenable number.

8663972 is a deficient number, since it is larger than the sum of its proper divisors (6668968).

8663972 is a wasteful number, since it uses less digits than its factorization.

8663972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24430 (or 24428 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 8663972 is about 2943.4625868185. The cubic root of 8663972 is about 205.3867140219.

The spelling of 8663972 in words is "eight million, six hundred sixty-three thousand, nine hundred seventy-two".