2 × 3² × 11 × 53 × 61

Prime Factor Structure

Factorization String 2 × 3^2 × 11 × 53 × 61

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 48

Divisor Sum (σ) 1,566,864

Proper Divisor Sum 926,730

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #640127 ← → #640139

1 2 3 6 9 11 18 22 33 53 61 66 99 106 122 159 183 198 318 366 477 549 583 671 954 1,098 1,166 1,342 1,749 2,013 3,233 3,498 4,026 5,247 6,039 6,466 9,699 10,494 12,078 19,398 29,097 35,563 58,194 71,126 106,689 213,378 320,067 640,134

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

640,134 320,067 960,202 480,101 1,440,304 720,152 360,076 180,038 90,019 270,058 135,029 405,088 202,544 101,272 50,636 25,318 12,659 37,978 18,989 56,968 28,484 14,242 7,121 21,364 10,682 5,341 16,024 8,012 4,006 2,003 6,010 3,005 9,016 4,508 2,254 1,127 3,382 1,691 5,074 2,537 7,612 3,806 1,903 5,710 2,855 8,566 4,283 12,850 6,425 19,276 9,638 4,819 14,458 7,229 21,688 10,844 5,422 2,711 8,134 4,067

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.