8304561 has 6 divisors (see below), whose sum is σ = 11995490. Its totient is φ = 5536368.

The previous prime is 8304557. The next prime is 8304599. The reversal of 8304561 is 1654038.

8304561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8088336 + 216225 = 2844^2 + 465^2 .

It is not a de Polignac number, because 8304561 - 2² = 8304557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8304061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461356 + ... + 461373.

Almost surely, 2^8304561 is an apocalyptic number.

It is an amenable number.

8304561 is a deficient number, since it is larger than the sum of its proper divisors (3690929).

8304561 is a wasteful number, since it uses less digits than its factorization.

8304561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922735 (or 922732 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 8304561 is about 2881.7635225674. The cubic root of 8304561 is about 202.5064652714.

Adding to 8304561 its reverse (1654038), we get a palindrome (9958599).

The spelling of 8304561 in words is "eight million, three hundred four thousand, five hundred sixty-one".