98611 has 4 divisors (see below), whose sum is σ = 101824. Its totient is φ = 95400.

The previous prime is 98597. The next prime is 98621. The reversal of 98611 is 11689.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98611 - 2¹⁵ = 65843 is a prime.

It is an Ulam number.

It is a Duffinian number.

98611 is a lucky number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (98621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1560 + ... + 1621.

It is an arithmetic number, because the mean of its divisors is an integer number (25456).

2⁹⁸⁶¹¹ is an apocalyptic number.

98611 is a deficient number, since it is larger than the sum of its proper divisors (3213).

98611 is a wasteful number, since it uses less digits than its factorization.

98611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212.

The product of its digits is 432, while the sum is 25.

The square root of 98611 is about 314.0238844419. The cubic root of 98611 is about 46.1999800104.

The spelling of 98611 in words is "ninety-eight thousand, six hundred eleven".