66462212 has 36 divisors (see below), whose sum is σ = 122324580. Its totient is φ = 31584384.

The previous prime is 66462211. The next prime is 66462217. The reversal of 66462212 is 21226466.

It can be written as a sum of positive squares in 6 ways, for example, as 36168196 + 30294016 = 6014^2 + 5504^2 .

It is not an unprimeable number, because it can be changed into a prime (66462211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290114 + ... + 290342.

It is an arithmetic number, because the mean of its divisors is an integer number (3397905).

Almost surely, 2^66462212 is an apocalyptic number.

It is an amenable number.

66462212 is a deficient number, since it is larger than the sum of its proper divisors (55862368).

66462212 is a wasteful number, since it uses less digits than its factorization.

66462212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 321 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 66462212 is about 8152.4359549769. The cubic root of 66462212 is about 405.0651970435.

Adding to 66462212 its reverse (21226466), we get a palindrome (87688678).

The spelling of 66462212 in words is "sixty-six million, four hundred sixty-two thousand, two hundred twelve".