71117671 has 2 divisors, whose sum is σ = 71117672. Its totient is φ = 71117670.

The previous prime is 71117639. The next prime is 71117677. The reversal of 71117671 is 17671117.

It is a strong prime.

It is an emirp because it is prime and its reverse (17671117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71117671 - 2⁵ = 71117639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71117677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35558835 + 35558836.

It is an arithmetic number, because the mean of its divisors is an integer number (35558836).

Almost surely, 2^71117671 is an apocalyptic number.

71117671 is a deficient number, since it is larger than the sum of its proper divisors (1).

71117671 is an equidigital number, since it uses as much as digits as its factorization.

71117671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2058, while the sum is 31.

The square root of 71117671 is about 8433.1293717101. The cubic root of 71117671 is about 414.3104065063.

Adding to 71117671 its reverse (17671117), we get a palindrome (88788788).

The spelling of 71117671 in words is "seventy-one million, one hundred seventeen thousand, six hundred seventy-one".