71216017 has 2 divisors, whose sum is σ = 71216018. Its totient is φ = 71216016.

The previous prime is 71215993. The next prime is 71216039. The reversal of 71216017 is 71061217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69072721 + 2143296 = 8311^2 + 1464^2 .

It is an emirp because it is prime and its reverse (71061217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71216017 - 2²³ = 62827409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71215982 and 71216000.

It is not a weakly prime, because it can be changed into another prime (71216317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35608008 + 35608009.

It is an arithmetic number, because the mean of its divisors is an integer number (35608009).

Almost surely, 2^71216017 is an apocalyptic number.

It is an amenable number.

71216017 is a deficient number, since it is larger than the sum of its proper divisors (1).

71216017 is an equidigital number, since it uses as much as digits as its factorization.

71216017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 71216017 is about 8438.9582887937. The cubic root of 71216017 is about 414.5012967269.

The spelling of 71216017 in words is "seventy-one million, two hundred sixteen thousand, seventeen".