66508323 has 16 divisors (see below), whose sum is σ = 101462016. Its totient is φ = 37961280.

The previous prime is 66508313. The next prime is 66508373. The reversal of 66508323 is 32380566.

It is not a de Polignac number, because 66508323 - 2⁵ = 66508291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66508313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29815 + ... + 31967.

It is an arithmetic number, because the mean of its divisors is an integer number (6341376).

Almost surely, 2^66508323 is an apocalyptic number.

66508323 is a deficient number, since it is larger than the sum of its proper divisors (34953693).

66508323 is a wasteful number, since it uses less digits than its factorization.

66508323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 66508323 is about 8155.2635150558. The cubic root of 66508323 is about 405.1588524850.

Adding to 66508323 its reverse (32380566), we get a palindrome (98888889).

The spelling of 66508323 in words is "sixty-six million, five hundred eight thousand, three hundred twenty-three".