81267 has 8 divisors (see below), whose sum is σ = 109824. Its totient is φ = 53448.

The previous prime is 81239. The next prime is 81281. The reversal of 81267 is 76218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81267 - 2⁶ = 81203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81667) 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 in 7 ways as a sum of consecutive naturals, for example, 178 + ... + 440.

It is an arithmetic number, because the mean of its divisors is an integer number (13728).

2⁸¹²⁶⁷ is an apocalyptic number.

81267 is a deficient number, since it is larger than the sum of its proper divisors (28557).

81267 is a wasteful number, since it uses less digits than its factorization.

81267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369.

The product of its digits is 672, while the sum is 24.

The square root of 81267 is about 285.0736746878. The cubic root of 81267 is about 43.3149757876.

It can be divided in two parts, 8 and 1267, that added together give a triangular number (1275 = T₅₀).

The spelling of 81267 in words is "eighty-one thousand, two hundred sixty-seven".