64544896 has 64 divisors (see below), whose sum is σ = 140515200. Its totient is φ = 29352960.

The previous prime is 64544891. The next prime is 64544899. The reversal of 64544896 is 69844546.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (64544891) 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, 131211 + ... + 131701.

It is an arithmetic number, because the mean of its divisors is an integer number (2195550).

Almost surely, 2^64544896 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 64544896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70257600).

64544896 is an abundant number, since it is smaller than the sum of its proper divisors (75970304).

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

64544896 is a wasteful number, since it uses less digits than its factorization.

64544896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 585 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 64544896 is about 8033.9838187539. The cubic root of 64544896 is about 401.1319934551.

The spelling of 64544896 in words is "sixty-four million, five hundred forty-four thousand, eight hundred ninety-six".