136640759 has 2 divisors, whose sum is σ = 136640760. Its totient is φ = 136640758.

The previous prime is 136640737. The next prime is 136640773. The reversal of 136640759 is 957046631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136640759 - 2⁸ = 136640503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136640789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68320379 + 68320380.

It is an arithmetic number, because the mean of its divisors is an integer number (68320380).

Almost surely, 2^136640759 is an apocalyptic number.

136640759 is a deficient number, since it is larger than the sum of its proper divisors (1).

136640759 is an equidigital number, since it uses as much as digits as its factorization.

136640759 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 136640759 is about 11689.3438224735. The cubic root of 136640759 is about 515.0626863086.

The spelling of 136640759 in words is "one hundred thirty-six million, six hundred forty thousand, seven hundred fifty-nine".