66423232 has 28 divisors (see below), whose sum is σ = 132176520. Its totient is φ = 33118976.

The previous prime is 66423193. The next prime is 66423263. The reversal of 66423232 is 23232466.

66423232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 66423232.

It is a congruent number.

It is an unprimeable number.

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, 25578 + ... + 28054.

It is an arithmetic number, because the mean of its divisors is an integer number (4720590).

Almost surely, 2^66423232 is an apocalyptic number.

It is an amenable number.

66423232 is a deficient number, since it is larger than the sum of its proper divisors (65753288).

66423232 is a wasteful number, since it uses less digits than its factorization.

66423232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908 (or 2898 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

The square root of 66423232 is about 8150.0449078517. The cubic root of 66423232 is about 404.9859914882.

Adding to 66423232 its reverse (23232466), we get a palindrome (89655698).

The spelling of 66423232 in words is "sixty-six million, four hundred twenty-three thousand, two hundred thirty-two".