66080923 has 4 divisors (see below), whose sum is σ = 66687280. Its totient is φ = 65474568.

The previous prime is 66080899. The next prime is 66080929. The reversal of 66080923 is 32908066.

It is a happy number.

66080923 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 an emirpimes, since its reverse is a distinct semiprime: 32908066 = 2 ⋅16454033.

It is a cyclic number.

It is not a de Polignac number, because 66080923 - 2⁵ = 66080891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66080929) 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, 303015 + ... + 303232.

It is an arithmetic number, because the mean of its divisors is an integer number (16671820).

Almost surely, 2^66080923 is an apocalyptic number.

66080923 is a deficient number, since it is larger than the sum of its proper divisors (606357).

66080923 is a wasteful number, since it uses less digits than its factorization.

66080923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606356.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 66080923 is about 8129.0173452884. The cubic root of 66080923 is about 404.2891009004.

Adding to 66080923 its reverse (32908066), we get a palindrome (98988989).

The spelling of 66080923 in words is "sixty-six million, eighty thousand, nine hundred twenty-three".