66420333 has 36 divisors (see below), whose sum is σ = 117492960. Its totient is φ = 35952336.

The previous prime is 66420317. The next prime is 66420379. The reversal of 66420333 is 33302466.

It is not a de Polignac number, because 66420333 - 2⁴ = 66420317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66420297 and 66420306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66470333) 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 35 ways as a sum of consecutive naturals, for example, 4416 + ... + 12342.

Almost surely, 2^66420333 is an apocalyptic number.

66420333 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

66420333 is a deficient number, since it is larger than the sum of its proper divisors (51072627).

66420333 is a wasteful number, since it uses less digits than its factorization.

66420333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966 (or 7956 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 66420333 is about 8149.8670541304. The cubic root of 66420333 is about 404.9800996166.

Adding to 66420333 its reverse (33302466), we get a palindrome (99722799).

The spelling of 66420333 in words is "sixty-six million, four hundred twenty thousand, three hundred thirty-three".