133330666 has 12 divisors (see below), whose sum is σ = 232648578. Its totient is φ = 57141672.

The previous prime is 133330663. The next prime is 133330679. The reversal of 133330666 is 666033331.

It can be written as a sum of positive squares in only one way, i.e., 70207641 + 63123025 = 8379^2 + 7945^2 .

It is not an unprimeable number, because it can be changed into a prime (133330663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 680161 + ... + 680356.

Almost surely, 2^133330666 is an apocalyptic number.

133330666 is a deficient number, since it is larger than the sum of its proper divisors (99317912).

133330666 is a wasteful number, since it uses less digits than its factorization.

133330666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360533 (or 1360526 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 31.

The square root of 133330666 is about 11546.8898842935. The cubic root of 133330666 is about 510.8695482352.

Adding to 133330666 its reverse (666033331), we get a palindrome (799363997).

The spelling of 133330666 in words is "one hundred thirty-three million, three hundred thirty thousand, six hundred sixty-six".