81062843 has 2 divisors, whose sum is σ = 81062844. Its totient is φ = 81062842.

The previous prime is 81062791. The next prime is 81062887. The reversal of 81062843 is 34826018.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81062843 - 2⁸ = 81062587 is a prime.

It is not a weakly prime, because it can be changed into another prime (81062243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40531421 + 40531422.

It is an arithmetic number, because the mean of its divisors is an integer number (40531422).

Almost surely, 2^81062843 is an apocalyptic number.

81062843 is a deficient number, since it is larger than the sum of its proper divisors (1).

81062843 is an equidigital number, since it uses as much as digits as its factorization.

81062843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 81062843 is about 9003.4906008725. The cubic root of 81062843 is about 432.7867375865.

The spelling of 81062843 in words is "eighty-one million, sixty-two thousand, eight hundred forty-three".