198626 has 8 divisors (see below), whose sum is σ = 313680. Its totient is φ = 94068.

The previous prime is 198623. The next prime is 198637. The reversal of 198626 is 626891.

198626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 9⁵ + 6³ + 8³ + 2¹⁷ + 6⁵ .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 198592 and 198601.

It is not an unprimeable number, because it can be changed into a prime (198623) 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, 2576 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (39210).

2¹⁹⁸⁶²⁶ is an apocalyptic number.

198626 is a deficient number, since it is larger than the sum of its proper divisors (115054).

198626 is a wasteful number, since it uses less digits than its factorization.

198626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248.

The product of its digits is 5184, while the sum is 32.

The square root of 198626 is about 445.6747693105. The cubic root of 198626 is about 58.3461268991.

The spelling of 198626 in words is "one hundred ninety-eight thousand, six hundred twenty-six".