71996297 has 2 divisors, whose sum is σ = 71996298. Its totient is φ = 71996296.

The previous prime is 71996293. The next prime is 71996317. The reversal of 71996297 is 79269917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43309561 + 28686736 = 6581^2 + 5356^2 .

It is an emirp because it is prime and its reverse (79269917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71996297 - 2² = 71996293 is a prime.

It is not a weakly prime, because it can be changed into another prime (71996293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35998148 + 35998149.

It is an arithmetic number, because the mean of its divisors is an integer number (35998149).

Almost surely, 2^71996297 is an apocalyptic number.

It is an amenable number.

71996297 is a deficient number, since it is larger than the sum of its proper divisors (1).

71996297 is an equidigital number, since it uses as much as digits as its factorization.

71996297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 50.

The square root of 71996297 is about 8485.0631700654. The cubic root of 71996297 is about 416.0096324970.

The spelling of 71996297 in words is "seventy-one million, nine hundred ninety-six thousand, two hundred ninety-seven".