8630813 has 2 divisors, whose sum is σ = 8630814. Its totient is φ = 8630812.

The previous prime is 8630789. The next prime is 8630821. The reversal of 8630813 is 3180368.

8630813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6853924 + 1776889 = 2618^2 + 1333^2 .

It is a cyclic number.

It is not a de Polignac number, because 8630813 - 2⁶ = 8630749 is a prime.

It is a super-3 number, since 3×8630813³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8630833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4315406 + 4315407.

It is an arithmetic number, because the mean of its divisors is an integer number (4315407).

Almost surely, 2^8630813 is an apocalyptic number.

It is an amenable number.

8630813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8630813 is an equidigital number, since it uses as much as digits as its factorization.

8630813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 8630813 is about 2937.8245352641. The cubic root of 8630813 is about 205.1243584144.

The spelling of 8630813 in words is "eight million, six hundred thirty thousand, eight hundred thirteen".