λ
Harmonic Matrix

660,447

33 × 61 × 401
Deficient Odd Composite

660,447 has digital root 9. The neighboring primes are 660409 and 660449; its proper-divisor sum differs from the starting integer by -323,934.

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Prime Factor Structure

Factorization String 3^3 × 61 × 401
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 996,960
Proper Divisor Sum 336,513
Digit Sum / Digital Root 27 (Root: 9)
Adjacent Primes #660409 ← → #660449

Radix Representation

Decimal 660447
Binary 10100001001111011111 (20 bits)
Octal 0o2411737
Hexadecimal 0xA13DF

Divisor Catalog (5 of 16)

1 3 9 27 61

Collatz Trajectory (216 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.

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