64432165 has 32 divisors (see below), whose sum is σ = 90994176. Its totient is φ = 42888960.

The previous prime is 64432157. The next prime is 64432169. The reversal of 64432165 is 56123446.

64432165 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 64432165 - 2³ = 64432157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64432169) 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 31 ways as a sum of consecutive naturals, for example, 219759 + ... + 220051.

It is an arithmetic number, because the mean of its divisors is an integer number (2843568).

Almost surely, 2^64432165 is an apocalyptic number.

It is an amenable number.

64432165 is a deficient number, since it is larger than the sum of its proper divisors (26562011).

64432165 is a wasteful number, since it uses less digits than its factorization.

64432165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its digits is 17280, while the sum is 31.

The square root of 64432165 is about 8026.9648684917. The cubic root of 64432165 is about 400.8983247712.

The spelling of 64432165 in words is "sixty-four million, four hundred thirty-two thousand, one hundred sixty-five".