66000323 has 4 divisors (see below), whose sum is σ = 66153888. Its totient is φ = 65846760.

The previous prime is 66000299. The next prime is 66000329. The reversal of 66000323 is 32300066.

It is a happy number.

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-66000323 is a prime.

It is a super-2 number, since 2×66000323² = 8712085272208658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66000295 and 66000304.

It is not an unprimeable number, because it can be changed into a prime (66000329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76136 + ... + 76997.

It is an arithmetic number, because the mean of its divisors is an integer number (16538472).

Almost surely, 2^66000323 is an apocalyptic number.

66000323 is a deficient number, since it is larger than the sum of its proper divisors (153565).

66000323 is a wasteful number, since it uses less digits than its factorization.

66000323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153564.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 66000323 is about 8124.0582838874. The cubic root of 66000323 is about 404.1246613139.

Adding to 66000323 its reverse (32300066), we get a palindrome (98300389).

The spelling of 66000323 in words is "sixty-six million, three hundred twenty-three", and thus it is an aban number.