66333001 has 4 divisors (see below), whose sum is σ = 75809152. Its totient is φ = 56856852.

The previous prime is 66332999. The next prime is 66333011. The reversal of 66333001 is 10033366.

It is a happy number.

66333001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66333001 - 2¹ = 66332999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66333011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4738065 + ... + 4738078.

It is an arithmetic number, because the mean of its divisors is an integer number (18952288).

Almost surely, 2^66333001 is an apocalyptic number.

It is an amenable number.

66333001 is a deficient number, since it is larger than the sum of its proper divisors (9476151).

66333001 is an equidigital number, since it uses as much as digits as its factorization.

66333001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9476150.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 66333001 is about 8144.5074129747. The cubic root of 66333001 is about 404.8025273144.

Adding to 66333001 its reverse (10033366), we get a palindrome (76366367).

The spelling of 66333001 in words is "sixty-six million, three hundred thirty-three thousand, one".