135904685 has 24 divisors (see below), whose sum is σ = 191143800. Its totient is φ = 92488704.

The previous prime is 135904679. The next prime is 135904687. The reversal of 135904685 is 586409531.

It can be written as a sum of positive squares in 4 ways, for example, as 7150276 + 128754409 = 2674^2 + 11347^2 .

It is not a de Polignac number, because 135904685 - 2⁸ = 135904429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135904687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31541 + ... + 35589.

It is an arithmetic number, because the mean of its divisors is an integer number (7964325).

Almost surely, 2^135904685 is an apocalyptic number.

It is an amenable number.

135904685 is a deficient number, since it is larger than the sum of its proper divisors (55239115).

135904685 is a wasteful number, since it uses less digits than its factorization.

135904685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205 (or 4198 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 135904685 is about 11657.8164765105. The cubic root of 135904685 is about 514.1361519640.

The spelling of 135904685 in words is "one hundred thirty-five million, nine hundred four thousand, six hundred eighty-five".