133686916 has 24 divisors (see below), whose sum is σ = 255919104. Its totient is φ = 60600480.

The previous prime is 133686901. The next prime is 133686919. The reversal of 133686916 is 619686331.

It is not an unprimeable number, because it can be changed into a prime (133686919) 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, 12886 + ... + 20818.

It is an arithmetic number, because the mean of its divisors is an integer number (10663296).

Almost surely, 2^133686916 is an apocalyptic number.

It is an amenable number.

133686916 is a deficient number, since it is larger than the sum of its proper divisors (122232188).

133686916 is a wasteful number, since it uses less digits than its factorization.

133686916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8331 (or 8329 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 133686916 is about 11562.3058253966. The cubic root of 133686916 is about 511.3241458848.

The spelling of 133686916 in words is "one hundred thirty-three million, six hundred eighty-six thousand, nine hundred sixteen".