3 × 213553

Prime Factor Structure

Factorization String 3 × 213553

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 854,216

Proper Divisor Sum 213,557

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #640649 ← → #640663

1 3 213,553 640,659

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

640,659 1,921,978 960,989 2,882,968 1,441,484 720,742 360,371 1,081,114 540,557 1,621,672 810,836 405,418 202,709 608,128 304,064 152,032 76,016 38,008 19,004 9,502 4,751 14,254 7,127 21,382 10,691 32,074 16,037 48,112 24,056 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

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