81467 has 4 divisors (see below), whose sum is σ = 83496. Its totient is φ = 79440.

The previous prime is 81463. The next prime is 81509. The reversal of 81467 is 76418.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 81467 - 2² = 81463 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 81467.

It is not an unprimeable number, because it can be changed into a prime (81463) 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 3 ways as a sum of consecutive naturals, for example, 953 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (20874).

2⁸¹⁴⁶⁷ is an apocalyptic number.

81467 is a deficient number, since it is larger than the sum of its proper divisors (2029).

81467 is a wasteful number, since it uses less digits than its factorization.

81467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its digits is 1344, while the sum is 26.

The square root of 81467 is about 285.4242456415. The cubic root of 81467 is about 43.3504797365.

The spelling of 81467 in words is "eighty-one thousand, four hundred sixty-seven".