133500668 has 24 divisors (see below), whose sum is σ = 267611232. Its totient is φ = 57083904.

The previous prime is 133500667. The next prime is 133500683. The reversal of 133500668 is 866005331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133500667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7580 + ... + 18012.

It is an arithmetic number, because the mean of its divisors is an integer number (11150468).

Almost surely, 2^133500668 is an apocalyptic number.

It is an amenable number.

133500668 is an abundant number, since it is smaller than the sum of its proper divisors (134110564).

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

133500668 is a wasteful number, since it uses less digits than its factorization.

133500668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901 (or 10899 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 133500668 is about 11554.2489154423. The cubic root of 133500668 is about 511.0865824748.

Adding to 133500668 its reverse (866005331), we get a palindrome (999505999).

The spelling of 133500668 in words is "one hundred thirty-three million, five hundred thousand, six hundred sixty-eight".