64636212 has 12 divisors (see below), whose sum is σ = 150817856. Its totient is φ = 21545400.

The previous prime is 64636177. The next prime is 64636217. The reversal of 64636212 is 21263646.

64636212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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 64636212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64636217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2693164 + ... + 2693187.

Almost surely, 2^64636212 is an apocalyptic number.

It is an amenable number.

64636212 is an abundant number, since it is smaller than the sum of its proper divisors (86181644).

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

64636212 is a wasteful number, since it uses less digits than its factorization.

64636212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5386358 (or 5386356 counting only the distinct ones).

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

The square root of 64636212 is about 8039.6649183906. The cubic root of 64636212 is about 401.3210737736.

Adding to 64636212 its reverse (21263646), we get a palindrome (85899858).

The spelling of 64636212 in words is "sixty-four million, six hundred thirty-six thousand, two hundred twelve".