136505 has 8 divisors (see below), whose sum is σ = 171072. Its totient is φ = 104368.

The previous prime is 136501. The next prime is 136511. The reversal of 136505 is 505631.

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 136505 - 2² = 136501 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136505.

It is not an unprimeable number, because it can be changed into a prime (136501) 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, 479 + ... + 708.

It is an arithmetic number, because the mean of its divisors is an integer number (21384).

2¹³⁶⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

136505 is a deficient number, since it is larger than the sum of its proper divisors (34567).

136505 is a wasteful number, since it uses less digits than its factorization.

136505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 136505 is about 369.4658306258. The cubic root of 136505 is about 51.4892050142.

The spelling of 136505 in words is "one hundred thirty-six thousand, five hundred five".