68135 has 4 divisors (see below), whose sum is σ = 81768. Its totient is φ = 54504.

The previous prime is 68113. The next prime is 68141. The reversal of 68135 is 53186.

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

It is a cyclic number.

It is not a de Polignac number, because 68135 - 2⁶ = 68071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68135.

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 in 3 ways as a sum of consecutive naturals, for example, 6809 + ... + 6818.

It is an arithmetic number, because the mean of its divisors is an integer number (20442).

2⁶⁸¹³⁵ is an apocalyptic number.

68135 is a deficient number, since it is larger than the sum of its proper divisors (13633).

68135 is a wasteful number, since it uses less digits than its factorization.

68135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13632.

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

The square root of 68135 is about 261.0268185455. The cubic root of 68135 is about 40.8435441168.

It can be divided in two parts, 68 and 135, that multiplied together give a triangular number (9180 = T₁₃₅).

The spelling of 68135 in words is "sixty-eight thousand, one hundred thirty-five".