64847872 has 32 divisors (see below), whose sum is σ = 129759300. Its totient is φ = 32407552.

The previous prime is 64847837. The next prime is 64847897. The reversal of 64847872 is 27874846.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31779 + ... + 33757.

Almost surely, 2^64847872 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 64847872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64879650).

64847872 is an abundant number, since it is smaller than the sum of its proper divisors (64911428).

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

64847872 is an frugal number, since it uses more digits than its factorization.

64847872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009 (or 1981 counting only the distinct ones).

The product of its digits is 602112, while the sum is 46.

The square root of 64847872 is about 8052.8176435332. The cubic root of 64847872 is about 401.7586564865.

The spelling of 64847872 in words is "sixty-four million, eight hundred forty-seven thousand, eight hundred seventy-two".