136735009 has 2 divisors, whose sum is σ = 136735010. Its totient is φ = 136735008.

The previous prime is 136734973. The next prime is 136735021. The reversal of 136735009 is 900537631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126495009 + 10240000 = 11247^2 + 3200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136735009 is a prime.

It is not a weakly prime, because it can be changed into another prime (136735309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68367504 + 68367505.

It is an arithmetic number, because the mean of its divisors is an integer number (68367505).

Almost surely, 2^136735009 is an apocalyptic number.

It is an amenable number.

136735009 is a deficient number, since it is larger than the sum of its proper divisors (1).

136735009 is an equidigital number, since it uses as much as digits as its factorization.

136735009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 136735009 is about 11693.3745770842. The cubic root of 136735009 is about 515.1810831455.

The spelling of 136735009 in words is "one hundred thirty-six million, seven hundred thirty-five thousand, nine".