135956 has 12 divisors (see below), whose sum is σ = 244020. Its totient is φ = 66240.

The previous prime is 135937. The next prime is 135977. The reversal of 135956 is 659531.

It can be written as a sum of positive squares in 2 ways, for example, as 36100 + 99856 = 190^2 + 316^2 .

It is a congruent number.

It is an unprimeable number.

135956 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, 251 + ... + 578.

It is an arithmetic number, because the mean of its divisors is an integer number (20335).

2¹³⁵⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

135956 is a deficient number, since it is larger than the sum of its proper divisors (108064).

135956 is a wasteful number, since it uses less digits than its factorization.

135956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 872 counting only the distinct ones).

The product of its digits is 4050, while the sum is 29.

The square root of 135956 is about 368.7221175899. The cubic root of 135956 is about 51.4200853135.

The spelling of 135956 in words is "one hundred thirty-five thousand, nine hundred fifty-six".