64168165 has 8 divisors (see below), whose sum is σ = 77065848. Its totient is φ = 51291840.

The previous prime is 64168163. The next prime is 64168177. The reversal of 64168165 is 56186146.

64168165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 136161 + 64032004 = 369^2 + 8002^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64168165 - 2¹ = 64168163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64168163) 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 7 ways as a sum of consecutive naturals, for example, 2259 + ... + 11551.

It is an arithmetic number, because the mean of its divisors is an integer number (9633231).

Almost surely, 2^64168165 is an apocalyptic number.

It is an amenable number.

64168165 is a deficient number, since it is larger than the sum of its proper divisors (12897683).

64168165 is a wasteful number, since it uses less digits than its factorization.

64168165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10679.

The product of its digits is 34560, while the sum is 37.

The square root of 64168165 is about 8010.5034173889. The cubic root of 64168165 is about 400.3500373453.

The spelling of 64168165 in words is "sixty-four million, one hundred sixty-eight thousand, one hundred sixty-five".