71330873 has 2 divisors, whose sum is σ = 71330874. Its totient is φ = 71330872.

The previous prime is 71330869. The next prime is 71330879. The reversal of 71330873 is 37803317.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65723449 + 5607424 = 8107^2 + 2368^2 .

It is a cyclic number.

It is not a de Polignac number, because 71330873 - 2² = 71330869 is a prime.

It is not a weakly prime, because it can be changed into another prime (71330879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35665436 + 35665437.

It is an arithmetic number, because the mean of its divisors is an integer number (35665437).

Almost surely, 2^71330873 is an apocalyptic number.

It is an amenable number.

71330873 is a deficient number, since it is larger than the sum of its proper divisors (1).

71330873 is an equidigital number, since it uses as much as digits as its factorization.

71330873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 71330873 is about 8445.7606525404. The cubic root of 71330873 is about 414.7240106241.

The spelling of 71330873 in words is "seventy-one million, three hundred thirty thousand, eight hundred seventy-three".