64320704 has 28 divisors (see below), whose sum is σ = 145871184. Its totient is φ = 27565824.

The previous prime is 64320701. The next prime is 64320713. The reversal of 64320704 is 40702346.

It is a happy number.

64320704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (64320701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71339 + ... + 72234.

Almost surely, 2^64320704 is an apocalyptic number.

64320704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64320704 is an abundant number, since it is smaller than the sum of its proper divisors (81550480).

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

64320704 is a wasteful number, since it uses less digits than its factorization.

64320704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143592 (or 143582 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 64320704 is about 8020.0189525961. The cubic root of 64320704 is about 400.6670204244.

The spelling of 64320704 in words is "sixty-four million, three hundred twenty thousand, seven hundred four".