8663544 has 64 divisors (see below), whose sum is σ = 25344000. Its totient is φ = 2734560.

The previous prime is 8663537. The next prime is 8663579. The reversal of 8663544 is 4453668.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8663499 and 8663508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3049 + ... + 5159.

It is an arithmetic number, because the mean of its divisors is an integer number (396000).

Almost surely, 2^8663544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8663544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12672000).

8663544 is an abundant number, since it is smaller than the sum of its proper divisors (16680456).

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

8663544 is a wasteful number, since it uses less digits than its factorization.

8663544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145 (or 2135 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 8663544 is about 2943.3898824315. The cubic root of 8663544 is about 205.3833319334.

The spelling of 8663544 in words is "eight million, six hundred sixty-three thousand, five hundred forty-four".