8628181 has 2 divisors, whose sum is σ = 8628182. Its totient is φ = 8628180.

The previous prime is 8628173. The next prime is 8628187. The reversal of 8628181 is 1818268.

8628181 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., 6275025 + 2353156 = 2505^2 + 1534^2 .

It is a cyclic number.

It is not a de Polignac number, because 8628181 - 2³ = 8628173 is a prime.

It is a super-2 number, since 2×8628181² = 148891014737522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8628187) 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 as a sum of consecutive naturals, namely, 4314090 + 4314091.

It is an arithmetic number, because the mean of its divisors is an integer number (4314091).

Almost surely, 2^8628181 is an apocalyptic number.

It is an amenable number.

8628181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8628181 is an equidigital number, since it uses as much as digits as its factorization.

8628181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 34.

The square root of 8628181 is about 2937.3765505975. The cubic root of 8628181 is about 205.1035051374.

The spelling of 8628181 in words is "eight million, six hundred twenty-eight thousand, one hundred eighty-one".