66004303 has 4 divisors (see below), whose sum is σ = 67123080. Its totient is φ = 64885528.

The previous prime is 66004291. The next prime is 66004307. The reversal of 66004303 is 30340066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30340066 = 2 ⋅15170033.

It is a cyclic number.

It is not a de Polignac number, because 66004303 - 2¹⁷ = 65873231 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 (66004307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559300 + ... + 559417.

It is an arithmetic number, because the mean of its divisors is an integer number (16780770).

Almost surely, 2^66004303 is an apocalyptic number.

66004303 is a deficient number, since it is larger than the sum of its proper divisors (1118777).

66004303 is a wasteful number, since it uses less digits than its factorization.

66004303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118776.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 66004303 is about 8124.3032316624. The cubic root of 66004303 is about 404.1327844248.

Adding to 66004303 its reverse (30340066), we get a palindrome (96344369).

The spelling of 66004303 in words is "sixty-six million, four thousand, three hundred three".