71843 has 2 divisors, whose sum is σ = 71844. Its totient is φ = 71842.

The previous prime is 71837. The next prime is 71849. The reversal of 71843 is 34817.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (71837) and next prime (71849).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71843 is a prime.

It is a super-2 number, since 2×71843² = 10322833298, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (71849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35921 + 35922.

It is an arithmetic number, because the mean of its divisors is an integer number (35922).

2⁷¹⁸⁴³ is an apocalyptic number.

71843 is a deficient number, since it is larger than the sum of its proper divisors (1).

71843 is an equidigital number, since it uses as much as digits as its factorization.

71843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 71843 is about 268.0354454172. The cubic root of 71843 is about 41.5714162001.

The spelling of 71843 in words is "seventy-one thousand, eight hundred forty-three".