135653 has 4 divisors (see below), whose sum is σ = 155040. Its totient is φ = 116268.

The previous prime is 135649. The next prime is 135661. The reversal of 135653 is 356531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135653 - 2² = 135649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9683 + ... + 9696.

It is an arithmetic number, because the mean of its divisors is an integer number (38760).

2¹³⁵⁶⁵³ is an apocalyptic number.

It is an amenable number.

135653 is a deficient number, since it is larger than the sum of its proper divisors (19387).

135653 is an equidigital number, since it uses as much as digits as its factorization.

135653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19386.

The product of its digits is 1350, while the sum is 23.

The square root of 135653 is about 368.3110098816. The cubic root of 135653 is about 51.3818575668.

The spelling of 135653 in words is "one hundred thirty-five thousand, six hundred fifty-three".