8661248 has 36 divisors (see below), whose sum is σ = 18052608. Its totient is φ = 4139520.

The previous prime is 8661241. The next prime is 8661251. The reversal of 8661248 is 8421668.

It is a Cunningham number, because it is equal to 2943²-1.

It is not an unprimeable number, because it can be changed into a prime (8661241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5153 + ... + 6623.

Almost surely, 2^8661248 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 8661248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9026304).

8661248 is an abundant number, since it is smaller than the sum of its proper divisors (9391360).

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

8661248 is a wasteful number, since it uses less digits than its factorization.

8661248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1496 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 8661248 is about 2942.9998301053. Note that the first 3 decimals coincide. The cubic root of 8661248 is about 205.3651868650.

The spelling of 8661248 in words is "eight million, six hundred sixty-one thousand, two hundred forty-eight".