133106666 has 32 divisors (see below), whose sum is σ = 262033920. Its totient is φ = 49129200.

The previous prime is 133106627. The next prime is 133106683. The reversal of 133106666 is 666601331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19820 + ... + 25671.

It is an arithmetic number, because the mean of its divisors is an integer number (8188560).

Almost surely, 2^133106666 is an apocalyptic number.

133106666 is a deficient number, since it is larger than the sum of its proper divisors (128927254).

133106666 is a wasteful number, since it uses less digits than its factorization.

133106666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45530.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 133106666 is about 11537.1862254191. The cubic root of 133106666 is about 510.5832952001.

Adding to 133106666 its reverse (666601331), we get a palindrome (799707997).

The spelling of 133106666 in words is "one hundred thirty-three million, one hundred six thousand, six hundred sixty-six".