66523168 has 24 divisors (see below), whose sum is σ = 132245568. Its totient is φ = 32937024.

The previous prime is 66523141. The next prime is 66523169. The reversal of 66523168 is 86132566.

It is not an unprimeable number, because it can be changed into a prime (66523169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6796 + ... + 13387.

It is an arithmetic number, because the mean of its divisors is an integer number (5510232).

Almost surely, 2^66523168 is an apocalyptic number.

It is an amenable number.

66523168 is a deficient number, since it is larger than the sum of its proper divisors (65722400).

66523168 is a wasteful number, since it uses less digits than its factorization.

66523168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20296 (or 20288 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 66523168 is about 8156.1736126691. The cubic root of 66523168 is about 405.1889947562.

The spelling of 66523168 in words is "sixty-six million, five hundred twenty-three thousand, one hundred sixty-eight".