91067 has 4 divisors (see below), whose sum is σ = 95880. Its totient is φ = 86256.

The previous prime is 91033. The next prime is 91079. The reversal of 91067 is 76019.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76019 = 19 ⋅4001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91067 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91067.

It is not an unprimeable number, because it can be changed into a prime (91097) 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, 2378 + ... + 2415.

It is an arithmetic number, because the mean of its divisors is an integer number (23970).

2⁹¹⁰⁶⁷ is an apocalyptic number.

91067 is a deficient number, since it is larger than the sum of its proper divisors (4813).

91067 is a wasteful number, since it uses less digits than its factorization.

91067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 91067 is about 301.7730935653. The cubic root of 91067 is about 44.9904506486.

The spelling of 91067 in words is "ninety-one thousand, sixty-seven".