133585609 has 8 divisors (see below), whose sum is σ = 144453888. Its totient is φ = 123051840.

The previous prime is 133585601. The next prime is 133585619. The reversal of 133585609 is 906585331.

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

It is a cyclic number.

It is not a de Polignac number, because 133585609 - 2³ = 133585601 is a prime.

It is a super-2 number, since 2×133585609² = 35690229863801762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133585601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82797 + ... + 84394.

It is an arithmetic number, because the mean of its divisors is an integer number (18056736).

Almost surely, 2^133585609 is an apocalyptic number.

It is an amenable number.

133585609 is a deficient number, since it is larger than the sum of its proper divisors (10868279).

133585609 is a wasteful number, since it uses less digits than its factorization.

133585609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167255.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 133585609 is about 11557.9240783109. The cubic root of 133585609 is about 511.1949539713.

The spelling of 133585609 in words is "one hundred thirty-three million, five hundred eighty-five thousand, six hundred nine".