136385 has 4 divisors (see below), whose sum is σ = 163668. Its totient is φ = 109104.

The previous prime is 136379. The next prime is 136393. The reversal of 136385 is 583631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38416 + 97969 = 196^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 136385 - 2¹⁶ = 70849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13634 + ... + 13643.

It is an arithmetic number, because the mean of its divisors is an integer number (40917).

2¹³⁶³⁸⁵ is an apocalyptic number.

It is an amenable number.

136385 is a deficient number, since it is larger than the sum of its proper divisors (27283).

136385 is an equidigital number, since it uses as much as digits as its factorization.

136385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27282.

The product of its digits is 2160, while the sum is 26.

The square root of 136385 is about 369.3033983055. The cubic root of 136385 is about 51.4741127318.

The spelling of 136385 in words is "one hundred thirty-six thousand, three hundred eighty-five".