135656 has 16 divisors (see below), whose sum is σ = 263040. Its totient is φ = 65520.

The previous prime is 135649. The next prime is 135661. The reversal of 135656 is 656531.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

135656 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 26 + ... + 521.

It is an arithmetic number, because the mean of its divisors is an integer number (16440).

2¹³⁵⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

135656 is a deficient number, since it is larger than the sum of its proper divisors (127384).

135656 is a wasteful number, since it uses less digits than its factorization.

135656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 580 counting only the distinct ones).

The product of its digits is 2700, while the sum is 26.

The square root of 135656 is about 368.3150825041. The cubic root of 135656 is about 51.3822363382.

The spelling of 135656 in words is "one hundred thirty-five thousand, six hundred fifty-six".