64044456 has 64 divisors (see below), whose sum is σ = 186900480. Its totient is φ = 17906880.

The previous prime is 64044451. The next prime is 64044469. The reversal of 64044456 is 65444046.

It is not an unprimeable number, because it can be changed into a prime (64044451) 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, 3841 + ... + 11951.

It is an arithmetic number, because the mean of its divisors is an integer number (2920320).

Almost surely, 2^64044456 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 64044456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93450240).

64044456 is an abundant number, since it is smaller than the sum of its proper divisors (122856024).

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

64044456 is a wasteful number, since it uses less digits than its factorization.

64044456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8174 (or 8170 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 64044456 is about 8002.7780176636. The cubic root of 64044456 is about 400.0925952303.

The spelling of 64044456 in words is "sixty-four million, forty-four thousand, four hundred fifty-six".