135138685 has 32 divisors (see below), whose sum is σ = 185732352. Its totient is φ = 93434880.

The previous prime is 135138671. The next prime is 135138701. The reversal of 135138685 is 586831531.

It is not a de Polignac number, because 135138685 - 2¹¹ = 135136637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400837 + ... + 401173.

It is an arithmetic number, because the mean of its divisors is an integer number (5804136).

Almost surely, 2^135138685 is an apocalyptic number.

It is an amenable number.

135138685 is a deficient number, since it is larger than the sum of its proper divisors (50593667).

135138685 is a wasteful number, since it uses less digits than its factorization.

135138685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its digits is 86400, while the sum is 40.

The square root of 135138685 is about 11624.9165588403. The cubic root of 135138685 is about 513.1683890796.

The spelling of 135138685 in words is "one hundred thirty-five million, one hundred thirty-eight thousand, six hundred eighty-five".