135612565 has 12 divisors (see below), whose sum is σ = 178874892. Its totient is φ = 98626880.

The previous prime is 135612563. The next prime is 135612649. The reversal of 135612565 is 565216531.

It can be written as a sum of positive squares in 2 ways, for example, as 99540529 + 36072036 = 9977^2 + 6006^2 .

It is not a de Polignac number, because 135612565 - 2¹ = 135612563 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 135612565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135612563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111472 + ... + 112681.

It is an arithmetic number, because the mean of its divisors is an integer number (14906241).

Almost surely, 2^135612565 is an apocalyptic number.

It is an amenable number.

135612565 is a deficient number, since it is larger than the sum of its proper divisors (43262327).

135612565 is a wasteful number, since it uses less digits than its factorization.

135612565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224180 (or 224169 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 135612565 is about 11645.2808038278. The cubic root of 135612565 is about 513.7675181442.

The spelling of 135612565 in words is "one hundred thirty-five million, six hundred twelve thousand, five hundred sixty-five".