81063 has 6 divisors (see below), whose sum is σ = 117104. Its totient is φ = 54036.

The previous prime is 81049. The next prime is 81071. The reversal of 81063 is 36018.

It is not a de Polignac number, because 81063 - 2⁴ = 81047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4495 + ... + 4512.

2⁸¹⁰⁶³ is an apocalyptic number.

81063 is a deficient number, since it is larger than the sum of its proper divisors (36041).

81063 is a wasteful number, since it uses less digits than its factorization.

81063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9013 (or 9010 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 81063 is about 284.7156476206. The cubic root of 81063 is about 43.2787016989.

The spelling of 81063 in words is "eighty-one thousand, sixty-three".