9975

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 5 (4 unique) factors are:
3
5² = 25
7
19

Its 24 divisors are:
1
3
5
7
15
19
21
25
35
57
75
95
105
133
175
285
399
475
525
665
1425
1995
3325
9975
Its aliquote sum is:
9865
makeing it a deficient number.

As Unicode codepoint (since version 5.2) this number represents this character:⛷ SKIER in Misc_Symbols (Source: https://ucdapi.org/unicode/latest/codepoint/dec/9975); HTML: ⛷

The number appears at position 20170 of the decimal digits of π surrounded by
37324450607924411763997597461938358457491598 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 915.148ms; cpu: 155.435ms)