66204133 has 8 divisors (see below), whose sum is σ = 68604800. Its totient is φ = 63842688.

The previous prime is 66204121. The next prime is 66204139. The reversal of 66204133 is 33140266.

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

It is a cyclic number.

It is not a de Polignac number, because 66204133 - 2¹⁷ = 66073061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66204098 and 66204107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66204139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6348 + ... + 13141.

It is an arithmetic number, because the mean of its divisors is an integer number (8575600).

Almost surely, 2^66204133 is an apocalyptic number.

It is an amenable number.

66204133 is a deficient number, since it is larger than the sum of its proper divisors (2400667).

66204133 is a wasteful number, since it uses less digits than its factorization.

66204133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19611.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 66204133 is about 8136.5922227920. The cubic root of 66204133 is about 404.5402148928.

Adding to 66204133 its reverse (33140266), we get a palindrome (99344399).

The spelling of 66204133 in words is "sixty-six million, two hundred four thousand, one hundred thirty-three".