135766 has 4 divisors (see below), whose sum is σ = 203652. Its totient is φ = 67882.

The previous prime is 135757. The next prime is 135781. The reversal of 135766 is 667531.

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

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 33940 + ... + 33943.

It is an arithmetic number, because the mean of its divisors is an integer number (50913).

2¹³⁵⁷⁶⁶ is an apocalyptic number.

135766 is a deficient number, since it is larger than the sum of its proper divisors (67886).

135766 is an equidigital number, since it uses as much as digits as its factorization.

135766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67885.

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

The square root of 135766 is about 368.4643809108. The cubic root of 135766 is about 51.3961207689.

The spelling of 135766 in words is "one hundred thirty-five thousand, seven hundred sixty-six".