133456668 has 12 divisors (see below), whose sum is σ = 311398920. Its totient is φ = 44485552.

The previous prime is 133456663. The next prime is 133456679. The reversal of 133456668 is 866654331.

It is a tau number, because it is divible by the number of its divisors (12).

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 (133456663) 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, 5560683 + ... + 5560706.

It is an arithmetic number, because the mean of its divisors is an integer number (25949910).

Almost surely, 2^133456668 is an apocalyptic number.

It is an amenable number.

133456668 is an abundant number, since it is smaller than the sum of its proper divisors (177942252).

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

133456668 is a wasteful number, since it uses less digits than its factorization.

133456668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11121396 (or 11121394 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 133456668 is about 11552.3446970734. The cubic root of 133456668 is about 511.0304272485.

The spelling of 133456668 in words is "one hundred thirty-three million, four hundred fifty-six thousand, six hundred sixty-eight".