64163305 has 4 divisors (see below), whose sum is σ = 76995972. Its totient is φ = 51330640.

The previous prime is 64163303. The next prime is 64163317. The reversal of 64163305 is 50336146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34012224 + 30151081 = 5832^2 + 5491^2 .

It is not a de Polignac number, because 64163305 - 2¹ = 64163303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64163303) 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, 6416326 + ... + 6416335.

It is an arithmetic number, because the mean of its divisors is an integer number (19248993).

Almost surely, 2^64163305 is an apocalyptic number.

It is an amenable number.

64163305 is a deficient number, since it is larger than the sum of its proper divisors (12832667).

64163305 is a wasteful number, since it uses less digits than its factorization.

64163305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12832666.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 64163305 is about 8010.2000599236. The cubic root of 64163305 is about 400.3399297875.

The spelling of 64163305 in words is "sixty-four million, one hundred sixty-three thousand, three hundred five".