64000065 has 16 divisors (see below), whose sum is σ = 102545856. Its totient is φ = 34084800.

The previous prime is 64000063. The next prime is 64000067. The reversal of 64000065 is 56000046.

It is an interprime number because it is at equal distance from previous prime (64000063) and next prime (64000067).

It is not a de Polignac number, because 64000065 - 2¹ = 64000063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64000063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9535 + ... + 14795.

It is an arithmetic number, because the mean of its divisors is an integer number (6409116).

Almost surely, 2^64000065 is an apocalyptic number.

It is an amenable number.

64000065 is a deficient number, since it is larger than the sum of its proper divisors (38545791).

64000065 is a wasteful number, since it uses less digits than its factorization.

64000065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6080.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 64000065 is about 8000.0040624990. The cubic root of 64000065 is about 400.0001354166. Note that the first 3 decimals are identical.

The spelling of 64000065 in words is "sixty-four million, sixty-five", and thus it is an aban number.