133560985 has 8 divisors (see below), whose sum is σ = 164182536. Its totient is φ = 104242560.

The previous prime is 133560971. The next prime is 133560991. The reversal of 133560985 is 589065331.

It can be written as a sum of positive squares in 4 ways, for example, as 2778889 + 130782096 = 1667^2 + 11436^2 .

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

It is not a de Polignac number, because 133560985 - 2⁵ = 133560953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325554 + ... + 325963.

It is an arithmetic number, because the mean of its divisors is an integer number (20522817).

Almost surely, 2^133560985 is an apocalyptic number.

It is an amenable number.

133560985 is a deficient number, since it is larger than the sum of its proper divisors (30621551).

133560985 is an equidigital number, since it uses as much as digits as its factorization.

133560985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651563.

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

The square root of 133560985 is about 11556.8587860197. The cubic root of 133560985 is about 511.1635423091.

The spelling of 133560985 in words is "one hundred thirty-three million, five hundred sixty thousand, nine hundred eighty-five".