91698 has 32 divisors (see below), whose sum is σ = 207360. Its totient is φ = 26880.

The previous prime is 91691. The next prime is 91703. The reversal of 91698 is 89619.

It is a happy number.

It is a Curzon number.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91698.

It is not an unprimeable number, because it can be changed into a prime (91691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2943 + ... + 2973.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

2⁹¹⁶⁹⁸ is an apocalyptic number.

91698 is an abundant number, since it is smaller than the sum of its proper divisors (115662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103680).

91698 is a wasteful number, since it uses less digits than its factorization.

91698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82.

The product of its digits is 3888, while the sum is 33.

The square root of 91698 is about 302.8167762856. The cubic root of 91698 is about 45.0941239765.

The spelling of 91698 in words is "ninety-one thousand, six hundred ninety-eight".