90598 has 8 divisors (see below), whose sum is σ = 137592. Its totient is φ = 44736.

The previous prime is 90583. The next prime is 90599. The reversal of 90598 is 89509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90599) 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, 40 + ... + 427.

It is an arithmetic number, because the mean of its divisors is an integer number (17199).

2⁹⁰⁵⁹⁸ is an apocalyptic number.

90598 is a deficient number, since it is larger than the sum of its proper divisors (46994).

90598 is a wasteful number, since it uses less digits than its factorization.

90598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 90598 is about 300.9950165700. The cubic root of 90598 is about 44.9130832587.

Subtracting from 90598 its reverse (89509), we obtain a square (1089 = 33²).

The spelling of 90598 in words is "ninety thousand, five hundred ninety-eight".