Strong's numbers

חוֹתָם (H2368)

chôwthâm

kho-thawm'

or חֹתָם; from חָתַם; a signature-ring; seal, signet.

חֹתָם, חוֹתָם n.m. seal, signet-ring

From Brown, Driver, and Briggs, A Hebrew and English Lexicon of the Old Testament (1906), in the public domain.

Shown in the King James Version (KJV), whichever translation you read in — it is the text these numbers are tagged against.

Song of Solomon 8:6
Set me as a seal upon thine heart, as a seal upon thine arm: for love is strong as death; jealousy is cruel as the grave: the coals thereof are coals of fire, which hath a most vehement flame.
Jeremiah 22:24
As I live, saith the LORD, though Coniah the son of Jehoiakim king of Judah were the signet upon my right hand, yet would I pluck thee thence;
Haggai 2:23
In that day, saith the LORD of hosts, will I take thee, O Zerubbabel, my servant, the son of Shealtiel, saith the LORD, and will make thee as a signet: for I have chosen thee, saith the LORD of hosts.