3 × 661

Prime Factor Structure

Factorization String 3 × 661

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,648

Proper Divisor Sum 665

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #1979 ← → #1987

1 3 661 1,983

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

1,983 5,950 2,975 8,926 4,463 13,390 6,695 20,086 10,043 30,130 15,065 45,196 22,598 11,299 33,898 16,949 50,848 25,424 12,712 6,356 3,178 1,589 4,768 2,384 1,192 596 298 149 448 224 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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