136680259 has 2 divisors, whose sum is σ = 136680260. Its totient is φ = 136680258.

The previous prime is 136680241. The next prime is 136680301. The reversal of 136680259 is 952086631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136680259 - 2¹¹ = 136678211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136680239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68340129 + 68340130.

It is an arithmetic number, because the mean of its divisors is an integer number (68340130).

Almost surely, 2^136680259 is an apocalyptic number.

136680259 is a deficient number, since it is larger than the sum of its proper divisors (1).

136680259 is an equidigital number, since it uses as much as digits as its factorization.

136680259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 136680259 is about 11691.0332734109. The cubic root of 136680259 is about 515.1123128283.

The spelling of 136680259 in words is "one hundred thirty-six million, six hundred eighty thousand, two hundred fifty-nine".