66302412 has 48 divisors (see below), whose sum is σ = 172900224. Its totient is φ = 19600000.

The previous prime is 66302407. The next prime is 66302413. The reversal of 66302412 is 21420366.

It is not an unprimeable number, because it can be changed into a prime (66302413) 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, 714 + ... + 11537.

It is an arithmetic number, because the mean of its divisors is an integer number (3602088).

Almost surely, 2^66302412 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 66302412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86450112).

66302412 is an abundant number, since it is smaller than the sum of its proper divisors (106597812).

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

66302412 is a wasteful number, since it uses less digits than its factorization.

66302412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310 (or 12308 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 66302412 is about 8142.6293050832. The cubic root of 66302412 is about 404.7402937947.

Adding to 66302412 its reverse (21420366), we get a palindrome (87722778).

The spelling of 66302412 in words is "sixty-six million, three hundred two thousand, four hundred twelve".