64044216 has 64 divisors (see below), whose sum is σ = 178560000. Its totient is φ = 21269088.

The previous prime is 64044203. The next prime is 64044217. The reversal of 64044216 is 61244046.

64044216 is a `hidden beast` number, since 640 + 4 + 4 + 2 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 64044216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64044217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103155 + ... + 103773.

It is an arithmetic number, because the mean of its divisors is an integer number (2790000).

Almost surely, 2^64044216 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 64044216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89280000).

64044216 is an abundant number, since it is smaller than the sum of its proper divisors (114515784).

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

64044216 is a wasteful number, since it uses less digits than its factorization.

64044216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 64044216 is about 8002.7630228565. The cubic root of 64044216 is about 400.0920954611.

The spelling of 64044216 in words is "sixty-four million, forty-four thousand, two hundred sixteen".