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674

674 is a natural number that sits between 673 and 675. In mathematics, it is an even and composite number, with a prime factorization of 2 × 337. Because 337 is prime, 674 is classified as a semiprime, having exactly two prime factors (counting multiplicity).

In numeral representations, 674 is written as 674 in decimal, DCLXXIV in Roman numerals, 1010100010 in binary,

In scientific contexts, wavelengths around 674 nanometers fall in the red portion of the visible spectrum.

Beyond these properties, 674 does not have widely noted mathematical constants or famous theorems specifically associated

1242
in
octal,
and
2A2
in
hexadecimal.
Its
digits
sum
to
17,
giving
a
digital
root
of
8.
It
is
congruent
to
2
modulo
3
and
to
4
modulo
5,
reflecting
its
non-divisibility
by
3
and
5.
It
is
divisible
by
2
but
not
by
4,
and
it
is
not
a
prime
number.
Such
values
are
typical
references
in
optics
and
spectroscopy
when
describing
light
sources
or
spectral
lines
near
the
red
end
of
the
visible
range.
with
it,
and
there
is
no
inherent
universal
cultural
significance
attached
to
the
number
itself.
Like
many
integers,
it
serves
as
a
basic
building
block
in
arithmetic,
number
theory,
and
the
various
numeral
systems
used
to
express
it.