133508785 has 8 divisors (see below), whose sum is σ = 165378816. Its totient is φ = 103361520.

The previous prime is 133508777. The next prime is 133508797. The reversal of 133508785 is 587805331.

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

It is not a de Polignac number, because 133508785 - 2³ = 133508777 is a prime.

It is a super-3 number, since 3×133508785³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 430519 + ... + 430828.

It is an arithmetic number, because the mean of its divisors is an integer number (20672352).

Almost surely, 2^133508785 is an apocalyptic number.

It is an amenable number.

133508785 is a deficient number, since it is larger than the sum of its proper divisors (31870031).

133508785 is an equidigital number, since it uses as much as digits as its factorization.

133508785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861383.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 133508785 is about 11554.6001661676. The cubic root of 133508785 is about 511.0969404896.

The spelling of 133508785 in words is "one hundred thirty-three million, five hundred eight thousand, seven hundred eighty-five".