90798 has 16 divisors (see below), whose sum is σ = 186960. Its totient is φ = 29376.

The previous prime is 90793. The next prime is 90803. The reversal of 90798 is 89709.

It is an interprime number because it is at equal distance from previous prime (90793) and next prime (90803).

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18 + ... + 426.

It is an arithmetic number, because the mean of its divisors is an integer number (11685).

2⁹⁰⁷⁹⁸ is an apocalyptic number.

90798 is an abundant number, since it is smaller than the sum of its proper divisors (96162).

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 (93480).

90798 is a wasteful number, since it uses less digits than its factorization.

90798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 90798 is about 301.3270648316. The cubic root of 90798 is about 44.9461083250.

Subtracting from 90798 its reverse (89709), we obtain a square (1089 = 33²).

It can be divided in two parts, 90 and 798, that added together give a palindrome (888).

The spelling of 90798 in words is "ninety thousand, seven hundred ninety-eight".