64664484 has 12 divisors (see below), whose sum is σ = 150883824. Its totient is φ = 21554824.

The previous prime is 64664473. The next prime is 64664489. The reversal of 64664484 is 48446646.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (64664489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2694342 + ... + 2694365.

It is an arithmetic number, because the mean of its divisors is an integer number (12573652).

Almost surely, 2^64664484 is an apocalyptic number.

It is an amenable number.

64664484 is an abundant number, since it is smaller than the sum of its proper divisors (86219340).

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

64664484 is a wasteful number, since it uses less digits than its factorization.

64664484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388714 (or 5388712 counting only the distinct ones).

The product of its digits is 442368, while the sum is 42.

The square root of 64664484 is about 8041.4230083985. The cubic root of 64664484 is about 401.3795781072.

The spelling of 64664484 in words is "sixty-four million, six hundred sixty-four thousand, four hundred eighty-four".