136765 has 8 divisors (see below), whose sum is σ = 173880. Its totient is φ = 102912.

The previous prime is 136753. The next prime is 136769. The reversal of 136765 is 567631.

136765 = 261² + 262².

136765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 68644 + 68121 = 262^2 + 261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136765 - 2⁵ = 136733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720 + ... + 889.

It is an arithmetic number, because the mean of its divisors is an integer number (21735).

2¹³⁶⁷⁶⁵ is an apocalyptic number.

136765 is the 262-nd centered square number.

It is an amenable number.

136765 is a deficient number, since it is larger than the sum of its proper divisors (37115).

136765 is a wasteful number, since it uses less digits than its factorization.

136765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its digits is 3780, while the sum is 28.

The square root of 136765 is about 369.8175225703. The cubic root of 136765 is about 51.5218746424.

The spelling of 136765 in words is "one hundred thirty-six thousand, seven hundred sixty-five".