66304212 has 24 divisors (see below), whose sum is σ = 166610976. Its totient is φ = 20401248.

The previous prime is 66304211. The next prime is 66304229. The reversal of 66304212 is 21240366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66304211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212358 + ... + 212669.

It is an arithmetic number, because the mean of its divisors is an integer number (6942124).

Almost surely, 2^66304212 is an apocalyptic number.

It is an amenable number.

66304212 is an abundant number, since it is smaller than the sum of its proper divisors (100306764).

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

66304212 is a wasteful number, since it uses less digits than its factorization.

66304212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425047 (or 425045 counting only the distinct ones).

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

The square root of 66304212 is about 8142.7398337415. The cubic root of 66304212 is about 404.7439564364.

Adding to 66304212 its reverse (21240366), we get a palindrome (87544578).

The spelling of 66304212 in words is "sixty-six million, three hundred four thousand, two hundred twelve".