66463212 has 24 divisors (see below), whose sum is σ = 155321712. Its totient is φ = 22120000.

The previous prime is 66463207. The next prime is 66463213. The reversal of 66463212 is 21236466.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 66463212.

It is not an unprimeable number, because it can be changed into a prime (66463213) 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, 4462 + ... + 12362.

It is an arithmetic number, because the mean of its divisors is an integer number (6471738).

Almost surely, 2^66463212 is an apocalyptic number.

It is an amenable number.

66463212 is an abundant number, since it is smaller than the sum of its proper divisors (88858500).

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

66463212 is a wasteful number, since it uses less digits than its factorization.

66463212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8609 (or 8607 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 66463212 is about 8152.4972861081. The cubic root of 66463212 is about 405.0672285897.

Adding to 66463212 its reverse (21236466), we get a palindrome (87699678).

The spelling of 66463212 in words is "sixty-six million, four hundred sixty-three thousand, two hundred twelve".