8684513 has 2 divisors, whose sum is σ = 8684514. Its totient is φ = 8684512.

The previous prime is 8684503. The next prime is 8684521. The reversal of 8684513 is 3154868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7795264 + 889249 = 2792^2 + 943^2 .

It is a cyclic number.

It is not a de Polignac number, because 8684513 - 2⁸ = 8684257 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8684503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4342256 + 4342257.

It is an arithmetic number, because the mean of its divisors is an integer number (4342257).

Almost surely, 2^8684513 is an apocalyptic number.

It is an amenable number.

8684513 is a deficient number, since it is larger than the sum of its proper divisors (1).

8684513 is an equidigital number, since it uses as much as digits as its factorization.

8684513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 8684513 is about 2946.9497790088. The cubic root of 8684513 is about 205.5488997872.

The spelling of 8684513 in words is "eight million, six hundred eighty-four thousand, five hundred thirteen".