81068 has 12 divisors (see below), whose sum is σ = 152880. Its totient is φ = 37392.

The previous prime is 81049. The next prime is 81071. The reversal of 81068 is 86018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (12740).

2⁸¹⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

81068 is a deficient number, since it is larger than the sum of its proper divisors (71812).

81068 is a wasteful number, since it uses less digits than its factorization.

81068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 81068 is about 284.7244281757. The cubic root of 81068 is about 43.2795914968.

Subtracting 81068 from its reverse (86018), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 810 and 68, that added together give a palindrome (878).

The spelling of 81068 in words is "eighty-one thousand, sixty-eight".