64516305 has 64 divisors (see below), whose sum is σ = 126167040. Its totient is φ = 27495936.

The previous prime is 64516303. The next prime is 64516327. The reversal of 64516305 is 50361546.

64516305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64516305 - 2¹ = 64516303 is a prime.

It is a super-2 number, since 2×64516305² = 8324707221706050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64516303) 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 63 ways as a sum of consecutive naturals, for example, 145414 + ... + 145856.

It is an arithmetic number, because the mean of its divisors is an integer number (1971360).

Almost surely, 2^64516305 is an apocalyptic number.

It is an amenable number.

64516305 is a deficient number, since it is larger than the sum of its proper divisors (61650735).

64516305 is a wasteful number, since it uses less digits than its factorization.

64516305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 64516305 is about 8032.2042429211. The cubic root of 64516305 is about 401.0727558320.

The spelling of 64516305 in words is "sixty-four million, five hundred sixteen thousand, three hundred five".