136860709 has 2 divisors, whose sum is σ = 136860710. Its totient is φ = 136860708.

The previous prime is 136860697. The next prime is 136860733. The reversal of 136860709 is 907068631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128187684 + 8673025 = 11322^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 136860709 - 2¹¹ = 136858661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136860749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68430354 + 68430355.

It is an arithmetic number, because the mean of its divisors is an integer number (68430355).

Almost surely, 2^136860709 is an apocalyptic number.

It is an amenable number.

136860709 is a deficient number, since it is larger than the sum of its proper divisors (1).

136860709 is an equidigital number, since it uses as much as digits as its factorization.

136860709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 136860709 is about 11698.7481808953. The cubic root of 136860709 is about 515.3389028308.

The spelling of 136860709 in words is "one hundred thirty-six million, eight hundred sixty thousand, seven hundred nine".