8135641 has 2 divisors, whose sum is σ = 8135642. Its totient is φ = 8135640.

The previous prime is 8135627. The next prime is 8135713. The reversal of 8135641 is 1465318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8094025 + 41616 = 2845^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 8135641 - 2¹⁹ = 7611353 is a prime.

8135641 is a lucky number.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (8135441) 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, 4067820 + 4067821.

It is an arithmetic number, because the mean of its divisors is an integer number (4067821).

Almost surely, 2^8135641 is an apocalyptic number.

It is an amenable number.

8135641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8135641 is an equidigital number, since it uses as much as digits as its factorization.

8135641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 8135641 is about 2852.3045068856. The cubic root of 8135641 is about 201.1240128087.

The spelling of 8135641 in words is "eight million, one hundred thirty-five thousand, six hundred forty-one".