Compare 364,879; 463,000; and 436,765 using scientific notation. Which number has the least value?

To compare the numbers \( 364,879 \), \( 463,000 \), and \( 436,765 \) using scientific notation, we'll first express each number in scientific notation:

1. \( 364,879 \) can be expressed as \( 3.64879 \times 10^5 \).
2. \( 463,000 \) can be expressed as \( 4.63 \times 10^5 \).
3. \( 436,765 \) can be expressed as \( 4.36765 \times 10^5 \).

Now we compare the values:

- \( 3.64879 \times 10^5 \) (which is the scientific notation for \( 364,879 \))
- \( 4.36765 \times 10^5 \) (which corresponds to \( 436,765 \))
- \( 4.63 \times 10^5 \) (which corresponds to \( 463,000 \))

Now, we see that they all have the same power of ten (\( 10^5 \)), so we only need to compare the coefficients:

- \( 3.64879 \) (for \( 364,879 \))
- \( 4.36765 \) (for \( 436,765 \))
- \( 4.63 \) (for \( 463,000 \))

The smallest coefficient is \( 3.64879 \), which corresponds to \( 364,879 \).

Thus, the number with the least value is:

**C. 364,879**.