135806 has 8 divisors (see below), whose sum is σ = 222264. Its totient is φ = 61720.

The previous prime is 135799. The next prime is 135829. The reversal of 135806 is 608531.

135806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

135806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3065 + ... + 3108.

It is an arithmetic number, because the mean of its divisors is an integer number (27783).

2¹³⁵⁸⁰⁶ is an apocalyptic number.

135806 is a deficient number, since it is larger than the sum of its proper divisors (86458).

135806 is a wasteful number, since it uses less digits than its factorization.

135806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 135806 is about 368.5186562442. The cubic root of 135806 is about 51.4011677933.

The spelling of 135806 in words is "one hundred thirty-five thousand, eight hundred six".