66330423 has 12 divisors (see below), whose sum is σ = 95949880. Its totient is φ = 44156016.

The previous prime is 66330371. The next prime is 66330431. The reversal of 66330423 is 32403366.

66330423 is a `hidden beast` number, since 6 + 633 + 0 + 4 + 23 = 666.

It is not a de Polignac number, because 66330423 - 2⁸ = 66330167 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 (66330023) 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 11 ways as a sum of consecutive naturals, for example, 1665 + ... + 11637.

Almost surely, 2^66330423 is an apocalyptic number.

66330423 is a deficient number, since it is larger than the sum of its proper divisors (29619457).

66330423 is a wasteful number, since it uses less digits than its factorization.

66330423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10718 (or 10715 counting only the distinct ones).

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

The square root of 66330423 is about 8144.3491452663. The cubic root of 66330423 is about 404.7972830949.

Adding to 66330423 its reverse (32403366), we get a palindrome (98733789).

The spelling of 66330423 in words is "sixty-six million, three hundred thirty thousand, four hundred twenty-three".