66133706 has 8 divisors (see below), whose sum is σ = 105035940. Its totient is φ = 31121728.

The previous prime is 66133673. The next prime is 66133709. The reversal of 66133706 is 60733166.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56776225 + 9357481 = 7535^2 + 3059^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66133709) 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, 972521 + ... + 972588.

Almost surely, 2^66133706 is an apocalyptic number.

66133706 is a deficient number, since it is larger than the sum of its proper divisors (38902234).

66133706 is a wasteful number, since it uses less digits than its factorization.

66133706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945128.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 66133706 is about 8132.2632766039. The cubic root of 66133706 is about 404.3967159851.

The spelling of 66133706 in words is "sixty-six million, one hundred thirty-three thousand, seven hundred six".