λ
Sigma Notebook

660,693

3 × 11 × 20021
Deficient Odd Composite

660,693 is odd and not a perfect square. Its factorization is 3 × 11 × 20021 and its 8 divisors sum to 961,056.

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Prime Factor Structure

Factorization String 3 × 11 × 20021
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 961,056
Proper Divisor Sum 300,363
Digit Sum / Digital Root 30 (Root: 3)
Adjacent Primes #660683 ← → #660719

Radix Representation

Decimal 660693
Binary 10100001010011010101 (20 bits)
Octal 0o2412325
Hexadecimal 0xA14D5

Divisor Catalog (5 of 8)

Collatz Trajectory (123 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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