8984561 has 4 divisors (see below), whose sum is σ = 9006324. Its totient is φ = 8962800.

The previous prime is 8984557. The next prime is 8984593. The reversal of 8984561 is 1654898.

8984561 = 2119² + 2120².

8984561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 4490161 = 2120^2 + 2119^2 .

It is a cyclic number.

It is not a de Polignac number, because 8984561 - 2² = 8984557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8984531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10250 + ... + 11091.

It is an arithmetic number, because the mean of its divisors is an integer number (2251581).

Almost surely, 2^8984561 is an apocalyptic number.

8984561 is the 2120-th centered square number.

It is an amenable number.

8984561 is a deficient number, since it is larger than the sum of its proper divisors (21763).

8984561 is a wasteful number, since it uses less digits than its factorization.

8984561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21762.

The product of its digits is 69120, while the sum is 41.

The square root of 8984561 is about 2997.4257288547. The cubic root of 8984561 is about 207.8893719527.

The spelling of 8984561 in words is "eight million, nine hundred eighty-four thousand, five hundred sixty-one".