636
Port 636 carries LDAP over TLS.
- Even
- Composite
Where 636 fits
Why 636 is special
636 is to 389 what 443 is to 80. Directory traffic contains usernames, group memberships and organisational structure, so running it unencrypted on 389 inside a corporate network remains one of the most common audit findings.
636 is part of
Factors & digit properties
- Divisors (12)
- 1, 2, 3, 4, 6, 12, 53, 106, 159, 212, 318, 636
- Prime factorisation
- 2^2 × 3 × 53
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 636
- Binary
- 1001111100
- Octal
- 1174
- Hexadecimal
- 27c
- Roman numeral
- DCXXXVI
- Scientific notation
- 6.360 × 10^2
Other mathematical patterns
- Palindromic number
- Abundant number
Related numbers & connections
Directory traffic encrypted and in the clear. The pairing repeats across protocols that moved to TLS by adding a second port rather than upgrading the first.
View 389 →Other connections
- is associated with389
why?
Strength 0.50, confidence "high".
Technology & computing
636 carries directory traffic over TLS; 389 carries it in the clear. Because directory queries contain usernames, group memberships and organisational structure, unencrypted LDAP on an internal network remains one of the most persistently reported audit findings in enterprise IT.
DocumentedTechnology & computing
Common questions
Is 636 a prime number?
No, 636 is not prime.
What are the factors of 636?
The factors of 636 are 1, 2, 3, 4, 6, 12, 53, 106, 159, 212, 318, 636.
What is 636 in Roman numerals?
636 in Roman numerals is DCXXXVI.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026