71328329 has 2 divisors, whose sum is σ = 71328330. Its totient is φ = 71328328.

The previous prime is 71328319. The next prime is 71328343. The reversal of 71328329 is 92382317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63234304 + 8094025 = 7952^2 + 2845^2 .

It is an emirp because it is prime and its reverse (92382317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71328329 - 2²⁰ = 70279753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71328319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35664164 + 35664165.

It is an arithmetic number, because the mean of its divisors is an integer number (35664165).

Almost surely, 2^71328329 is an apocalyptic number.

It is an amenable number.

71328329 is a deficient number, since it is larger than the sum of its proper divisors (1).

71328329 is an equidigital number, since it uses as much as digits as its factorization.

71328329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 71328329 is about 8445.6100430934. The cubic root of 71328329 is about 414.7190802184.

The spelling of 71328329 in words is "seventy-one million, three hundred twenty-eight thousand, three hundred twenty-nine".