64914320 has 20 divisors (see below), whose sum is σ = 150925980. Its totient is φ = 25965696.

The previous prime is 64914259. The next prime is 64914329. The reversal of 64914320 is 2341946.

64914320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 45589504 + 19324816 = 6752^2 + 4396^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (64914329) 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, 405635 + ... + 405794.

It is an arithmetic number, because the mean of its divisors is an integer number (7546299).

Almost surely, 2^64914320 is an apocalyptic number.

It is an amenable number.

64914320 is an abundant number, since it is smaller than the sum of its proper divisors (86011660).

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

64914320 is a wasteful number, since it uses less digits than its factorization.

64914320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811442 (or 811436 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 64914320 is about 8056.9423480623. The cubic root of 64914320 is about 401.8958336742.

The spelling of 64914320 in words is "sixty-four million, nine hundred fourteen thousand, three hundred twenty".