135956605 has 8 divisors (see below), whose sum is σ = 164763864. Its totient is φ = 107688000.

The previous prime is 135956603. The next prime is 135956627. The reversal of 135956605 is 506659531.

It can be written as a sum of positive squares in 4 ways, for example, as 74459641 + 61496964 = 8629^2 + 7842^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135956605 - 2¹ = 135956603 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 (135956603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134106 + ... + 135115.

It is an arithmetic number, because the mean of its divisors is an integer number (20595483).

Almost surely, 2^135956605 is an apocalyptic number.

It is an amenable number.

135956605 is a deficient number, since it is larger than the sum of its proper divisors (28807259).

135956605 is a wasteful number, since it uses less digits than its factorization.

135956605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269327.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 135956605 is about 11660.0430959752. The cubic root of 135956605 is about 514.2016158598.

The spelling of 135956605 in words is "one hundred thirty-five million, nine hundred fifty-six thousand, six hundred five".