640,104

2³ × 3 × 149 × 179

Prime Factor Structure

Factorization String 2^3 × 3 × 149 × 179

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 32

Divisor Sum (σ) 1,620,000

Proper Divisor Sum 979,896

Digit Sum / Digital Root 15 (Root: 6)

Adjacent Primes #640099 ← → #640109

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

640,104 320,052 160,026 80,013 240,040 120,020 60,010 30,005 90,016 45,008 22,504 11,252 5,626 2,813 8,440 4,220 2,110 1,055 3,166 1,583 4,750 2,375 7,126 3,563 10,690 5,345 16,036 8,018 4,009 12,028 6,014 3,007 9,022 4,511 13,534 6,767 20,302 10,151 30,454 15,227 45,682 22,841 68,524 34,262 17,131 51,394 25,697 77,092 38,546 19,273 57,820 28,910 14,455 43,366 21,683 65,050 32,525 97,576 48,788 24,394

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