136813727 has 4 divisors (see below), whose sum is σ = 136945200. Its totient is φ = 136682256.

The previous prime is 136813709. The next prime is 136813751. The reversal of 136813727 is 727318631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727318631 = 13 ⋅55947587.

It is a cyclic number.

It is not a de Polignac number, because 136813727 - 2²² = 132619423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136813777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64163 + ... + 66260.

It is an arithmetic number, because the mean of its divisors is an integer number (34236300).

Almost surely, 2^136813727 is an apocalyptic number.

136813727 is a deficient number, since it is larger than the sum of its proper divisors (131473).

136813727 is a wasteful number, since it uses less digits than its factorization.

136813727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131472.

The product of its digits is 42336, while the sum is 38.

The square root of 136813727 is about 11696.7400159190. The cubic root of 136813727 is about 515.2799269969.

The spelling of 136813727 in words is "one hundred thirty-six million, eight hundred thirteen thousand, seven hundred twenty-seven".