91327865 has 16 divisors (see below), whose sum is σ = 110994240. Its totient is φ = 72135360.

The previous prime is 91327849. The next prime is 91327883. The reversal of 91327865 is 56872319.

It is not a de Polignac number, because 91327865 - 2⁴ = 91327849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229847 + ... + 230243.

It is an arithmetic number, because the mean of its divisors is an integer number (6937140).

Almost surely, 2^91327865 is an apocalyptic number.

It is an amenable number.

91327865 is a deficient number, since it is larger than the sum of its proper divisors (19666375).

91327865 is a wasteful number, since it uses less digits than its factorization.

91327865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its digits is 90720, while the sum is 41.

The square root of 91327865 is about 9556.5613585641. The cubic root of 91327865 is about 450.3336866579. Note that the first 3 decimals are identical.

The spelling of 91327865 in words is "ninety-one million, three hundred twenty-seven thousand, eight hundred sixty-five".