91708 has 12 divisors (see below), whose sum is σ = 162792. Its totient is φ = 45200.

The previous prime is 91703. The next prime is 91711. The reversal of 91708 is 80719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (13566).

2⁹¹⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

91708 is a deficient number, since it is larger than the sum of its proper divisors (71084).

91708 is a wasteful number, since it uses less digits than its factorization.

91708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 91708 is about 302.8332874702. The cubic root of 91708 is about 45.0957631430.

Subtracting from 91708 its product of nonzero digits (504), we obtain a square (91204 = 302²).

The spelling of 91708 in words is "ninety-one thousand, seven hundred eight".