71616071 has 2 divisors, whose sum is σ = 71616072. Its totient is φ = 71616070.

The previous prime is 71616049. The next prime is 71616079. The reversal of 71616071 is 17061617.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71616071 - 2⁶ = 71616007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71616079) 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, 35808035 + 35808036.

It is an arithmetic number, because the mean of its divisors is an integer number (35808036).

Almost surely, 2^71616071 is an apocalyptic number.

71616071 is a deficient number, since it is larger than the sum of its proper divisors (1).

71616071 is an equidigital number, since it uses as much as digits as its factorization.

71616071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 71616071 is about 8462.6279015445. The cubic root of 71616071 is about 415.2759977576.

Adding to 71616071 its reverse (17061617), we get a palindrome (88677688).

The spelling of 71616071 in words is "seventy-one million, six hundred sixteen thousand, seventy-one".