91585067 has 12 divisors (see below), whose sum is σ = 109976256. Its totient is φ = 75967920.

The previous prime is 91585037. The next prime is 91585079. The reversal of 91585067 is 76058519.

It is not a de Polignac number, because 91585067 - 2⁶ = 91585003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91585037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28628 + ... + 31665.

It is an arithmetic number, because the mean of its divisors is an integer number (9164688).

Almost surely, 2^91585067 is an apocalyptic number.

91585067 is a deficient number, since it is larger than the sum of its proper divisors (18391189).

91585067 is a wasteful number, since it uses less digits than its factorization.

91585067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60338 (or 60331 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 91585067 is about 9570.0087251789. The cubic root of 91585067 is about 450.7560410050.

The spelling of 91585067 in words is "ninety-one million, five hundred eighty-five thousand, sixty-seven".