133720066 has 8 divisors (see below), whose sum is σ = 200658240. Its totient is φ = 66833988.

The previous prime is 133720057. The next prime is 133720099. The reversal of 133720066 is 660027331.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5806 + ... + 17353.

It is an arithmetic number, because the mean of its divisors is an integer number (25082280).

Almost surely, 2^133720066 is an apocalyptic number.

133720066 is a deficient number, since it is larger than the sum of its proper divisors (66938174).

133720066 is a wasteful number, since it uses less digits than its factorization.

133720066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26048.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 133720066 is about 11563.7392741276. The cubic root of 133720066 is about 511.3664063022.

Adding to 133720066 its reverse (660027331), we get a palindrome (793747397).

The spelling of 133720066 in words is "one hundred thirty-three million, seven hundred twenty thousand, sixty-six".