135288609 has 8 divisors (see below), whose sum is σ = 180441600. Its totient is φ = 90164016.

The previous prime is 135288581. The next prime is 135288623. The reversal of 135288609 is 906882531.

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

It is not a de Polignac number, because 135288609 - 2⁵ = 135288577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135288649) 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, 9699 + ... + 19095.

It is an arithmetic number, because the mean of its divisors is an integer number (22555200).

Almost surely, 2^135288609 is an apocalyptic number.

It is an amenable number.

135288609 is a deficient number, since it is larger than the sum of its proper divisors (45152991).

135288609 is an equidigital number, since it uses as much as digits as its factorization.

135288609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14199.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 135288609 is about 11631.3631617279. The cubic root of 135288609 is about 513.3580900618.

The spelling of 135288609 in words is "one hundred thirty-five million, two hundred eighty-eight thousand, six hundred nine".