66043023 has 4 divisors (see below), whose sum is σ = 88057368. Its totient is φ = 44028680.

The previous prime is 66043013. The next prime is 66043067. The reversal of 66043023 is 32034066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66043023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66042984 and 66043002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66043013) 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, 11007168 + ... + 11007173.

It is an arithmetic number, because the mean of its divisors is an integer number (22014342).

Almost surely, 2^66043023 is an apocalyptic number.

66043023 is a deficient number, since it is larger than the sum of its proper divisors (22014345).

66043023 is a wasteful number, since it uses less digits than its factorization.

66043023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22014344.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 66043023 is about 8126.6858558702. The cubic root of 66043023 is about 404.2117942360.

Adding to 66043023 its reverse (32034066), we get a palindrome (98077089).

The spelling of 66043023 in words is "sixty-six million, forty-three thousand, twenty-three".