71260391 has 2 divisors, whose sum is σ = 71260392. Its totient is φ = 71260390.

The previous prime is 71260367. The next prime is 71260421. The reversal of 71260391 is 19306217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71260391 - 2⁶ = 71260327 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71260361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35630195 + 35630196.

It is an arithmetic number, because the mean of its divisors is an integer number (35630196).

Almost surely, 2^71260391 is an apocalyptic number.

71260391 is a deficient number, since it is larger than the sum of its proper divisors (1).

71260391 is an equidigital number, since it uses as much as digits as its factorization.

71260391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 71260391 is about 8441.5869953463. The cubic root of 71260391 is about 414.5873694132.

The spelling of 71260391 in words is "seventy-one million, two hundred sixty thousand, three hundred ninety-one".