133566108 has 72 divisors (see below), whose sum is σ = 342857088. Its totient is φ = 40442688.

The previous prime is 133566091. The next prime is 133566131. The reversal of 133566108 is 801665331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135385 + ... + 136367.

It is an arithmetic number, because the mean of its divisors is an integer number (4761904).

Almost surely, 2^133566108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133566108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171428544).

133566108 is an abundant number, since it is smaller than the sum of its proper divisors (209290980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133566108 is a wasteful number, since it uses less digits than its factorization.

133566108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 133566108 is about 11557.0804271667. The cubic root of 133566108 is about 511.1700777938.

The spelling of 133566108 in words is "one hundred thirty-three million, five hundred sixty-six thousand, one hundred eight".