64064320 has 28 divisors (see below), whose sum is σ = 152553924. Its totient is φ = 25625600.

The previous prime is 64064311. The next prime is 64064323. The reversal of 64064320 is 2346046.

It can be written as a sum of positive squares in 2 ways, for example, as 11182336 + 52881984 = 3344^2 + 7272^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64064323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99781 + ... + 100420.

Almost surely, 2^64064320 is an apocalyptic number.

It is an amenable number.

64064320 is an abundant number, since it is smaller than the sum of its proper divisors (88489604).

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

64064320 is a wasteful number, since it uses less digits than its factorization.

64064320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200218 (or 200208 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 64064320 is about 8004.0189904822. The cubic root of 64064320 is about 400.1339551350.

The spelling of 64064320 in words is "sixty-four million, sixty-four thousand, three hundred twenty".