64530065 has 24 divisors (see below), whose sum is σ = 83666688. Its totient is φ = 47725920.

The previous prime is 64530047. The next prime is 64530077. The reversal of 64530065 is 56003546.

64530065 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 64530065 - 2¹⁶ = 64464529 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 81602 + ... + 82388.

It is an arithmetic number, because the mean of its divisors is an integer number (3486112).

Almost surely, 2^64530065 is an apocalyptic number.

It is an amenable number.

64530065 is a deficient number, since it is larger than the sum of its proper divisors (19136623).

64530065 is a wasteful number, since it uses less digits than its factorization.

64530065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 64530065 is about 8033.0607491790. The cubic root of 64530065 is about 401.1012673265.

The spelling of 64530065 in words is "sixty-four million, five hundred thirty thousand, sixty-five".