133346666 has 8 divisors (see below), whose sum is σ = 200119044. Its totient is φ = 66640320.

The previous prime is 133346639. The next prime is 133346677. The reversal of 133346666 is 666643331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 129846025 + 3500641 = 11395^2 + 1871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11105 + ... + 19748.

Almost surely, 2^133346666 is an apocalyptic number.

133346666 is a deficient number, since it is larger than the sum of its proper divisors (66772378).

133346666 is a wasteful number, since it uses less digits than its factorization.

133346666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33016.

The product of its digits is 139968, while the sum is 38.

The square root of 133346666 is about 11547.5826907626. The cubic root of 133346666 is about 510.8899826085.

Adding to 133346666 its reverse (666643331), we get a palindrome (799989997).

The spelling of 133346666 in words is "one hundred thirty-three million, three hundred forty-six thousand, six hundred sixty-six".