136637747 has 2 divisors, whose sum is σ = 136637748. Its totient is φ = 136637746.

The previous prime is 136637741. The next prime is 136637791. The reversal of 136637747 is 747736631.

It is an a-pointer prime, because the next prime (136637791) can be obtained adding 136637747 to its sum of digits (44).

It is a weak prime.

It is an emirp because it is prime and its reverse (747736631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136637747 - 2⁴ = 136637731 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136637698 and 136637707.

It is not a weakly prime, because it can be changed into another prime (136637741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68318873 + 68318874.

It is an arithmetic number, because the mean of its divisors is an integer number (68318874).

Almost surely, 2^136637747 is an apocalyptic number.

136637747 is a deficient number, since it is larger than the sum of its proper divisors (1).

136637747 is an equidigital number, since it uses as much as digits as its factorization.

136637747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 44.

The square root of 136637747 is about 11689.2149864736. The cubic root of 136637747 is about 515.0589017370.

The spelling of 136637747 in words is "one hundred thirty-six million, six hundred thirty-seven thousand, seven hundred forty-seven".