98609 has 4 divisors (see below), whose sum is σ = 112704. Its totient is φ = 84516.

The previous prime is 98597. The next prime is 98621. The reversal of 98609 is 90689.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90689 = 23 ⋅3943.

It is an interprime number because it is at equal distance from previous prime (98597) and next prime (98621).

It is a cyclic number.

It is not a de Polignac number, because 98609 - 2¹² = 94513 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98639) 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, 7037 + ... + 7050.

It is an arithmetic number, because the mean of its divisors is an integer number (28176).

2⁹⁸⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

98609 is a deficient number, since it is larger than the sum of its proper divisors (14095).

98609 is a wasteful number, since it uses less digits than its factorization.

98609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14094.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 98609 is about 314.0206999546. The cubic root of 98609 is about 46.1996676700.

It can be divided in two parts, 98 and 609, that added together give a palindrome (707).

The spelling of 98609 in words is "ninety-eight thousand, six hundred nine".