136815671 has 2 divisors, whose sum is σ = 136815672. Its totient is φ = 136815670.

The previous prime is 136815587. The next prime is 136815683. The reversal of 136815671 is 176518631.

It is a strong prime.

It is an emirp because it is prime and its reverse (176518631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136815671 - 2¹⁰ = 136814647 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136815571) 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, 68407835 + 68407836.

It is an arithmetic number, because the mean of its divisors is an integer number (68407836).

Almost surely, 2^136815671 is an apocalyptic number.

136815671 is a deficient number, since it is larger than the sum of its proper divisors (1).

136815671 is an equidigital number, since it uses as much as digits as its factorization.

136815671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 136815671 is about 11696.8231157011. The cubic root of 136815671 is about 515.2823675401.

The spelling of 136815671 in words is "one hundred thirty-six million, eight hundred fifteen thousand, six hundred seventy-one".