98578 has 8 divisors (see below), whose sum is σ = 154368. Its totient is φ = 47124.

The previous prime is 98573. The next prime is 98597. The reversal of 98578 is 87589.

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

It is not an unprimeable number, because it can be changed into a prime (98573) by changing a digit.

98578 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026 + ... + 1117.

It is an arithmetic number, because the mean of its divisors is an integer number (19296).

2⁹⁸⁵⁷⁸ is an apocalyptic number.

98578 is a deficient number, since it is larger than the sum of its proper divisors (55790).

98578 is a wasteful number, since it uses less digits than its factorization.

98578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168.

The product of its digits is 20160, while the sum is 37.

The square root of 98578 is about 313.9713362713. The cubic root of 98578 is about 46.1948258543.

It can be divided in two parts, 98 and 578, that multiplied together give a square (56644 = 238²).

The spelling of 98578 in words is "ninety-eight thousand, five hundred seventy-eight".