66630232 has 16 divisors (see below), whose sum is σ = 125135640. Its totient is φ = 33260736.

The previous prime is 66630217. The next prime is 66630233. The reversal of 66630232 is 23203666.

It is a self number, because there is not a number n which added to its sum of digits gives 66630232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66630233) 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, 1333 + ... + 11620.

Almost surely, 2^66630232 is an apocalyptic number.

It is an amenable number.

66630232 is a deficient number, since it is larger than the sum of its proper divisors (58505408).

66630232 is a wasteful number, since it uses less digits than its factorization.

66630232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13602 (or 13598 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 66630232 is about 8162.7343457937. The cubic root of 66630232 is about 405.4062519100.

Adding to 66630232 its reverse (23203666), we get a palindrome (89833898).

The spelling of 66630232 in words is "sixty-six million, six hundred thirty thousand, two hundred thirty-two".