64165265 has 4 divisors (see below), whose sum is σ = 76998324. Its totient is φ = 51332208.

The previous prime is 64165247. The next prime is 64165271. The reversal of 64165265 is 56256146.

64165265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7268416 + 56896849 = 2696^2 + 7543^2 .

It is a cyclic number.

It is not a de Polignac number, because 64165265 - 2⁶ = 64165201 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 6416522 + ... + 6416531.

It is an arithmetic number, because the mean of its divisors is an integer number (19249581).

Almost surely, 2^64165265 is an apocalyptic number.

It is an amenable number.

64165265 is a deficient number, since it is larger than the sum of its proper divisors (12833059).

64165265 is a wasteful number, since it uses less digits than its factorization.

64165265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12833058.

The product of its digits is 43200, while the sum is 35.

The square root of 64165265 is about 8010.3224029998. The cubic root of 64165265 is about 400.3440061479.

The spelling of 64165265 in words is "sixty-four million, one hundred sixty-five thousand, two hundred sixty-five".