66670333 has 4 divisors (see below), whose sum is σ = 68969340. Its totient is φ = 64371328.

The previous prime is 66670327. The next prime is 66670421. The reversal of 66670333 is 33307666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46212804 + 20457529 = 6798^2 + 4523^2 .

It is a cyclic number.

It is not a de Polignac number, because 66670333 - 2¹⁷ = 66539261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66670313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1149460 + ... + 1149517.

It is an arithmetic number, because the mean of its divisors is an integer number (17242335).

Almost surely, 2^66670333 is an apocalyptic number.

It is an amenable number.

66670333 is a deficient number, since it is larger than the sum of its proper divisors (2299007).

66670333 is a wasteful number, since it uses less digits than its factorization.

66670333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299006.

The product of its (nonzero) digits is 40824, while the sum is 34.

The square root of 66670333 is about 8165.1903223379. The cubic root of 66670333 is about 405.4875660286.

Adding to 66670333 its reverse (33307666), we get a palindrome (99977999).

The spelling of 66670333 in words is "sixty-six million, six hundred seventy thousand, three hundred thirty-three".