81832727 has 2 divisors, whose sum is σ = 81832728. Its totient is φ = 81832726.

The previous prime is 81832711. The next prime is 81832757. The reversal of 81832727 is 72723818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81832727 - 2⁴ = 81832711 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81832757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40916363 + 40916364.

It is an arithmetic number, because the mean of its divisors is an integer number (40916364).

Almost surely, 2^81832727 is an apocalyptic number.

81832727 is a deficient number, since it is larger than the sum of its proper divisors (1).

81832727 is an equidigital number, since it uses as much as digits as its factorization.

81832727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 38.

The square root of 81832727 is about 9046.1443167794. The cubic root of 81832727 is about 434.1525350982.

The spelling of 81832727 in words is "eighty-one million, eight hundred thirty-two thousand, seven hundred twenty-seven".