66406333 has 8 divisors (see below), whose sum is σ = 75958400. Its totient is φ = 56870640.

The previous prime is 66406331. The next prime is 66406339. The reversal of 66406333 is 33360466.

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 66406333 - 2¹ = 66406331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66406295 and 66406304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66406331) 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, 6403 + ... + 13183.

It is an arithmetic number, because the mean of its divisors is an integer number (9494800).

Almost surely, 2^66406333 is an apocalyptic number.

It is an amenable number.

66406333 is a deficient number, since it is larger than the sum of its proper divisors (9552067).

66406333 is a wasteful number, since it uses less digits than its factorization.

66406333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187.

The product of its (nonzero) digits is 23328, while the sum is 31.

The square root of 66406333 is about 8149.0080991492. The cubic root of 66406333 is about 404.9516438735.

Adding to 66406333 its reverse (33360466), we get a palindrome (99766799).

The spelling of 66406333 in words is "sixty-six million, four hundred six thousand, three hundred thirty-three".