133680844 has 12 divisors (see below), whose sum is σ = 255208968. Its totient is φ = 60764000.

The previous prime is 133680839. The next prime is 133680847. The reversal of 133680844 is 448086331.

133680844 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (133680847) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1519057 + ... + 1519144.

It is an arithmetic number, because the mean of its divisors is an integer number (21267414).

Almost surely, 2^133680844 is an apocalyptic number.

It is an amenable number.

133680844 is a deficient number, since it is larger than the sum of its proper divisors (121528124).

133680844 is a wasteful number, since it uses less digits than its factorization.

133680844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038216 (or 3038214 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 133680844 is about 11562.0432450324. The cubic root of 133680844 is about 511.3164043962.

The spelling of 133680844 in words is "one hundred thirty-three million, six hundred eighty thousand, eight hundred forty-four".