64444212 has 144 divisors (see below), whose sum is σ = 201801600. Its totient is φ = 17273088.

The previous prime is 64444207. The next prime is 64444213. The reversal of 64444212 is 21244446.

It is a happy number.

64444212 is a `hidden beast` number, since 6 + 4 + 444 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64444213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209763 + ... + 210069.

It is an arithmetic number, because the mean of its divisors is an integer number (1401400).

Almost surely, 2^64444212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64444212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100900800).

64444212 is an abundant number, since it is smaller than the sum of its proper divisors (137357388).

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

64444212 is a wasteful number, since it uses less digits than its factorization.

64444212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 336 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 64444212 is about 8027.7152415865. The cubic root of 64444212 is about 400.9233087791.

Adding to 64444212 its reverse (21244446), we get a palindrome (85688658).

The spelling of 64444212 in words is "sixty-four million, four hundred forty-four thousand, two hundred twelve".