136771 has 4 divisors (see below), whose sum is σ = 137592. Its totient is φ = 135952.

The previous prime is 136769. The next prime is 136777. The reversal of 136771 is 177631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 177631 = 19 ⋅9349.

It is a cyclic number.

It is not a de Polignac number, because 136771 - 2¹ = 136769 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 (136777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61 + ... + 526.

It is an arithmetic number, because the mean of its divisors is an integer number (34398).

2¹³⁶⁷⁷¹ is an apocalyptic number.

136771 is a deficient number, since it is larger than the sum of its proper divisors (821).

136771 is an equidigital number, since it uses as much as digits as its factorization.

136771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its digits is 882, while the sum is 25.

The square root of 136771 is about 369.8256345901. The cubic root of 136771 is about 51.5226280680.

The spelling of 136771 in words is "one hundred thirty-six thousand, seven hundred seventy-one".