64240065 has 24 divisors (see below), whose sum is σ = 113942400. Its totient is φ = 33463584.

The previous prime is 64240063. The next prime is 64240067. The reversal of 64240065 is 56004246.

It is a happy number.

64240065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64240063) and next prime (64240067).

It is not a de Polignac number, because 64240065 - 2¹ = 64240063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64240061) 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 23 ways as a sum of consecutive naturals, for example, 14665 + ... + 18534.

It is an arithmetic number, because the mean of its divisors is an integer number (4747600).

Almost surely, 2^64240065 is an apocalyptic number.

It is an amenable number.

64240065 is a deficient number, since it is larger than the sum of its proper divisors (49702335).

64240065 is a wasteful number, since it uses less digits than its factorization.

64240065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33253 (or 33250 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 64240065 is about 8014.9900187087. The cubic root of 64240065 is about 400.4995113780.

The spelling of 64240065 in words is "sixty-four million, two hundred forty thousand, sixty-five".