133690868 has 12 divisors (see below), whose sum is σ = 235802112. Its totient is φ = 66318840.

The previous prime is 133690867. The next prime is 133690877. The reversal of 133690868 is 868096331.

133690868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133690867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131078 + ... + 132093.

It is an arithmetic number, because the mean of its divisors is an integer number (19650176).

Almost surely, 2^133690868 is an apocalyptic number.

It is an amenable number.

133690868 is a deficient number, since it is larger than the sum of its proper divisors (102111244).

133690868 is a wasteful number, since it uses less digits than its factorization.

133690868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263302 (or 263300 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 133690868 is about 11562.4767243009. The cubic root of 133690868 is about 511.3291843562.

The spelling of 133690868 in words is "one hundred thirty-three million, six hundred ninety thousand, eight hundred sixty-eight".