71065297 has 2 divisors, whose sum is σ = 71065298. Its totient is φ = 71065296.

The previous prime is 71065289. The next prime is 71065373. The reversal of 71065297 is 79256017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59613841 + 11451456 = 7721^2 + 3384^2 .

It is a cyclic number.

It is not a de Polignac number, because 71065297 - 2³ = 71065289 is a prime.

It is not a weakly prime, because it can be changed into another prime (71065697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35532648 + 35532649.

It is an arithmetic number, because the mean of its divisors is an integer number (35532649).

Almost surely, 2^71065297 is an apocalyptic number.

It is an amenable number.

71065297 is a deficient number, since it is larger than the sum of its proper divisors (1).

71065297 is an equidigital number, since it uses as much as digits as its factorization.

71065297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 71065297 is about 8430.0235468236. The cubic root of 71065297 is about 414.2086764121.

It can be divided in two parts, 7106 and 5297, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 71065297 in words is "seventy-one million, sixty-five thousand, two hundred ninety-seven".