6,648,655
5 × 13 × 233 × 439
Deficient
Odd
Composite
Starting at 6,648,655, the Collatz iteration reaches 1 after 178 steps. The first transition is 19945966; the starting value is odd with 16 positive divisors.
Resources
Prime Factor Structure
Factorization String
5 × 13 × 233 × 439
Distinct Prime Factors
4
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
16
Divisor Sum (σ)
8,648,640
Proper Divisor Sum
1,999,985
Digit Sum / Digital Root
40 (Root: 4)
Adjacent Primes
#6648647 ← → #6648661
Radix Representation
| Decimal | 6648655 |
| Binary | 11001010111001101001111 (23 bits) |
| Octal | 0o31271517 |
| Hexadecimal | 0x65734F |
Divisor Catalog (5 of 16)
Collatz Trajectory (178 steps to reach 1)
Iterative sequence n → n/2 (if even) or 3n+1 (if odd):
Showing the first 5 trajectory entries; the stopping-time total above is unchanged.