8330561 has 4 divisors (see below), whose sum is σ = 8820612. Its totient is φ = 7840512.

The previous prime is 8330557. The next prime is 8330563. The reversal of 8330561 is 1650338.

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 4000000 + 4330561 = 2000^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 8330561 - 2² = 8330557 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8330561.

It is not an unprimeable number, because it can be changed into a prime (8330563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245000 + ... + 245033.

It is an arithmetic number, because the mean of its divisors is an integer number (2205153).

Almost surely, 2^8330561 is an apocalyptic number.

It is an amenable number.

8330561 is a deficient number, since it is larger than the sum of its proper divisors (490051).

8330561 is a wasteful number, since it uses less digits than its factorization.

8330561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490050.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 8330561 is about 2886.2711237858. The cubic root of 8330561 is about 202.7175815037.

Adding to 8330561 its reverse (1650338), we get a palindrome (9980899).

The spelling of 8330561 in words is "eight million, three hundred thirty thousand, five hundred sixty-one".