133336668 has 24 divisors (see below), whose sum is σ = 311406480. Its totient is φ = 44404480.

The previous prime is 133336663. The next prime is 133336669. The reversal of 133336668 is 866633331.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133336663) 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, 10228 + ... + 19268.

It is an arithmetic number, because the mean of its divisors is an integer number (12975270).

Almost surely, 2^133336668 is an apocalyptic number.

It is an amenable number.

133336668 is an abundant number, since it is smaller than the sum of its proper divisors (178069812).

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

133336668 is a wasteful number, since it uses less digits than its factorization.

133336668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10277 (or 10275 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

The square root of 133336668 is about 11547.1497781920. The cubic root of 133336668 is about 510.8772138711.

Adding to 133336668 its reverse (866633331), we get a palindrome (999969999).

The spelling of 133336668 in words is "one hundred thirty-three million, three hundred thirty-six thousand, six hundred sixty-eight".