64845984 has 48 divisors (see below), whose sum is σ = 194539968. Its totient is φ = 18527232.

The previous prime is 64845971. The next prime is 64846003. The reversal of 64845984 is 48954846.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47577 + ... + 48920.

It is an arithmetic number, because the mean of its divisors is an integer number (4052916).

Almost surely, 2^64845984 is an apocalyptic number.

It is an amenable number.

64845984 is an abundant number, since it is smaller than the sum of its proper divisors (129693984).

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

64845984 is a wasteful number, since it uses less digits than its factorization.

64845984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96517 (or 96509 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 48.

The square root of 64845984 is about 8052.7004166304. The cubic root of 64845984 is about 401.7547574755.

The spelling of 64845984 in words is "sixty-four million, eight hundred forty-five thousand, nine hundred eighty-four".