136760209 has 2 divisors, whose sum is σ = 136760210. Its totient is φ = 136760208.

The previous prime is 136760191. The next prime is 136760213. The reversal of 136760209 is 902067631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135955600 + 804609 = 11660^2 + 897^2 .

It is a cyclic number.

It is not a de Polignac number, because 136760209 - 2¹³ = 136752017 is a prime.

It is not a weakly prime, because it can be changed into another prime (136760249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68380104 + 68380105.

It is an arithmetic number, because the mean of its divisors is an integer number (68380105).

Almost surely, 2^136760209 is an apocalyptic number.

It is an amenable number.

136760209 is a deficient number, since it is larger than the sum of its proper divisors (1).

136760209 is an equidigital number, since it uses as much as digits as its factorization.

136760209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 136760209 is about 11694.4520606996. The cubic root of 136760209 is about 515.2127301634.

The spelling of 136760209 in words is "one hundred thirty-six million, seven hundred sixty thousand, two hundred nine".