66030912 has 168 divisors, whose sum is σ = 202082400. Its totient is φ = 20579328.

The previous prime is 66030901. The next prime is 66030917. The reversal of 66030912 is 21903066.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66030917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 985503 + ... + 985569.

Almost surely, 2^66030912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66030912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101041200).

66030912 is an abundant number, since it is smaller than the sum of its proper divisors (136051488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66030912 is a wasteful number, since it uses less digits than its factorization.

66030912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 66030912 is about 8125.9406840070. The cubic root of 66030912 is about 404.1870845438.

Adding to 66030912 its reverse (21903066), we get a palindrome (87933978).

The spelling of 66030912 in words is "sixty-six million, thirty thousand, nine hundred twelve".