71693 has 2 divisors, whose sum is σ = 71694. Its totient is φ = 71692.

The previous prime is 71671. The next prime is 71699. The reversal of 71693 is 39617.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51529 + 20164 = 227^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 71693 - 2⁸ = 71437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35846 + 35847.

It is an arithmetic number, because the mean of its divisors is an integer number (35847).

2⁷¹⁶⁹³ is an apocalyptic number.

It is an amenable number.

71693 is a deficient number, since it is larger than the sum of its proper divisors (1).

71693 is an equidigital number, since it uses as much as digits as its factorization.

71693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 26.

The square root of 71693 is about 267.7554854714. The cubic root of 71693 is about 41.5424639139.

Adding to 71693 its product of digits (1134), we get a palindrome (72827).

The spelling of 71693 in words is "seventy-one thousand, six hundred ninety-three".