64165329 has 6 divisors (see below), whose sum is σ = 92683266. Its totient is φ = 42776880.

The previous prime is 64165307. The next prime is 64165349. The reversal of 64165329 is 92356146.

It is a happy number.

64165329 is a `hidden beast` number, since 641 + 6 + 5 + 3 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38155329 + 26010000 = 6177^2 + 5100^2 .

It is not a de Polignac number, because 64165329 - 2⁷ = 64165201 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64165293 and 64165302.

It is not an unprimeable number, because it can be changed into a prime (64165349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3564732 + ... + 3564749.

It is an arithmetic number, because the mean of its divisors is an integer number (15447211).

Almost surely, 2^64165329 is an apocalyptic number.

It is an amenable number.

64165329 is a deficient number, since it is larger than the sum of its proper divisors (28517937).

64165329 is a wasteful number, since it uses less digits than its factorization.

64165329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129487 (or 7129484 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 64165329 is about 8010.3263978442. The cubic root of 64165329 is about 400.3441392522.

The spelling of 64165329 in words is "sixty-four million, one hundred sixty-five thousand, three hundred twenty-nine".