91008067 has 4 divisors (see below), whose sum is σ = 91511056. Its totient is φ = 90505080.

The previous prime is 91008059. The next prime is 91008083. The reversal of 91008067 is 76080019.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76080019 = 331 ⋅229849.

It is a cyclic number.

It is not a de Polignac number, because 91008067 - 2³ = 91008059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91008097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251223 + ... + 251584.

It is an arithmetic number, because the mean of its divisors is an integer number (22877764).

Almost surely, 2^91008067 is an apocalyptic number.

91008067 is a deficient number, since it is larger than the sum of its proper divisors (502989).

91008067 is a wasteful number, since it uses less digits than its factorization.

91008067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502988.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 91008067 is about 9539.8148304881. The cubic root of 91008067 is about 449.8074353046.

The spelling of 91008067 in words is "ninety-one million, eight thousand, sixty-seven".