136240717 has 2 divisors, whose sum is σ = 136240718. Its totient is φ = 136240716.

The previous prime is 136240679. The next prime is 136240723. The reversal of 136240717 is 717042631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136095556 + 145161 = 11666^2 + 381^2 .

It is a cyclic number.

It is not a de Polignac number, because 136240717 - 2⁷ = 136240589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136240747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68120358 + 68120359.

It is an arithmetic number, because the mean of its divisors is an integer number (68120359).

Almost surely, 2^136240717 is an apocalyptic number.

It is an amenable number.

136240717 is a deficient number, since it is larger than the sum of its proper divisors (1).

136240717 is an equidigital number, since it uses as much as digits as its factorization.

136240717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 136240717 is about 11672.2198831242. The cubic root of 136240717 is about 514.5595467457.

The spelling of 136240717 in words is "one hundred thirty-six million, two hundred forty thousand, seven hundred seventeen".