135865565 has 16 divisors (see below), whose sum is σ = 178488576. Its totient is φ = 98462400.

The previous prime is 135865559. The next prime is 135865567. The reversal of 135865565 is 565568531.

It is not a de Polignac number, because 135865565 - 2¹² = 135861469 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 (135865567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11900 + ... + 20330.

It is an arithmetic number, because the mean of its divisors is an integer number (11155536).

Almost surely, 2^135865565 is an apocalyptic number.

It is an amenable number.

135865565 is a deficient number, since it is larger than the sum of its proper divisors (42623011).

135865565 is a wasteful number, since it uses less digits than its factorization.

135865565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740.

The product of its digits is 540000, while the sum is 44.

The square root of 135865565 is about 11656.1385115312. The cubic root of 135865565 is about 514.0868160725.

The spelling of 135865565 in words is "one hundred thirty-five million, eight hundred sixty-five thousand, five hundred sixty-five".