71736971 has 2 divisors, whose sum is σ = 71736972. Its totient is φ = 71736970.

The previous prime is 71736961. The next prime is 71737019. The reversal of 71736971 is 17963717.

It is a weak prime.

It is an emirp because it is prime and its reverse (17963717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71736971 - 2¹⁰ = 71735947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (71736901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35868485 + 35868486.

It is an arithmetic number, because the mean of its divisors is an integer number (35868486).

Almost surely, 2^71736971 is an apocalyptic number.

71736971 is a deficient number, since it is larger than the sum of its proper divisors (1).

71736971 is an equidigital number, since it uses as much as digits as its factorization.

71736971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566, while the sum is 41.

The square root of 71736971 is about 8469.7680605788. The cubic root of 71736971 is about 415.5095516761.

The spelling of 71736971 in words is "seventy-one million, seven hundred thirty-six thousand, nine hundred seventy-one".