71891683 has 2 divisors, whose sum is σ = 71891684. Its totient is φ = 71891682.

The previous prime is 71891587. The next prime is 71891711. The reversal of 71891683 is 38619817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71891683 - 2¹³ = 71883491 is a prime.

It is not a weakly prime, because it can be changed into another prime (71891483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35945841 + 35945842.

It is an arithmetic number, because the mean of its divisors is an integer number (35945842).

Almost surely, 2^71891683 is an apocalyptic number.

71891683 is a deficient number, since it is larger than the sum of its proper divisors (1).

71891683 is an equidigital number, since it uses as much as digits as its factorization.

71891683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 71891683 is about 8478.8963314809. The cubic root of 71891683 is about 415.8080409818.

The spelling of 71891683 in words is "seventy-one million, eight hundred ninety-one thousand, six hundred eighty-three".