136743917 has 2 divisors, whose sum is σ = 136743918. Its totient is φ = 136743916.

The previous prime is 136743881. The next prime is 136743977. The reversal of 136743917 is 719347631.

136743917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109223401 + 27520516 = 10451^2 + 5246^2 .

It is a cyclic number.

It is not a de Polignac number, because 136743917 - 2¹⁴ = 136727533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136743977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68371958 + 68371959.

It is an arithmetic number, because the mean of its divisors is an integer number (68371959).

Almost surely, 2^136743917 is an apocalyptic number.

It is an amenable number.

136743917 is a deficient number, since it is larger than the sum of its proper divisors (1).

136743917 is an equidigital number, since it uses as much as digits as its factorization.

136743917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 41.

The square root of 136743917 is about 11693.7554703354. The cubic root of 136743917 is about 515.1922705594.

The spelling of 136743917 in words is "one hundred thirty-six million, seven hundred forty-three thousand, nine hundred seventeen".