66752212 has 12 divisors (see below), whose sum is σ = 118462176. Its totient is φ = 32905880.

The previous prime is 66752201. The next prime is 66752219. The reversal of 66752212 is 21225766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66752219) 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, 117238 + ... + 117805.

It is an arithmetic number, because the mean of its divisors is an integer number (9871848).

Almost surely, 2^66752212 is an apocalyptic number.

It is an amenable number.

66752212 is a deficient number, since it is larger than the sum of its proper divisors (51709964).

66752212 is a wasteful number, since it uses less digits than its factorization.

66752212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235118 (or 235116 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 66752212 is about 8170.2026902642. The cubic root of 66752212 is about 405.6534935741.

Adding to 66752212 its reverse (21225766), we get a palindrome (87977978).

The spelling of 66752212 in words is "sixty-six million, seven hundred fifty-two thousand, two hundred twelve".