136894717 has 2 divisors, whose sum is σ = 136894718. Its totient is φ = 136894716.

The previous prime is 136894679. The next prime is 136894739. The reversal of 136894717 is 717498631.

136894717 is digitally balanced in base 2, 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., 121418361 + 15476356 = 11019^2 + 3934^2 .

It is an emirp because it is prime and its reverse (717498631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136894717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136894787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68447358 + 68447359.

It is an arithmetic number, because the mean of its divisors is an integer number (68447359).

Almost surely, 2^136894717 is an apocalyptic number.

It is an amenable number.

136894717 is a deficient number, since it is larger than the sum of its proper divisors (1).

136894717 is an equidigital number, since it uses as much as digits as its factorization.

136894717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 136894717 is about 11700.2015794601. The cubic root of 136894717 is about 515.3815841674.

The spelling of 136894717 in words is "one hundred thirty-six million, eight hundred ninety-four thousand, seven hundred seventeen".