81068683 has 2 divisors, whose sum is σ = 81068684. Its totient is φ = 81068682.

The previous prime is 81068653. The next prime is 81068693. The reversal of 81068683 is 38686018.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81068683 - 2⁵ = 81068651 is a prime.

It is not a weakly prime, because it can be changed into another prime (81068653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40534341 + 40534342.

It is an arithmetic number, because the mean of its divisors is an integer number (40534342).

Almost surely, 2^81068683 is an apocalyptic number.

81068683 is a deficient number, since it is larger than the sum of its proper divisors (1).

81068683 is an equidigital number, since it uses as much as digits as its factorization.

81068683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 81068683 is about 9003.8149136908. The cubic root of 81068683 is about 432.7971304034.

The spelling of 81068683 in words is "eighty-one million, sixty-eight thousand, six hundred eighty-three".