2² × 3 × 31 × 1723

Prime Factor Structure

Factorization String 2^2 × 3 × 31 × 1723

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,544,704

Proper Divisor Sum 903,748

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #640949 ← → #640957

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

640,956 320,478 160,239 480,718 240,359 721,078 360,539 1,081,618 540,809 1,622,428 811,214 405,607 1,216,822 608,411 1,825,234 912,617 2,737,852 1,368,926 684,463 2,053,390 1,026,695 3,080,086 1,540,043 4,620,130 2,310,065 6,930,196 3,465,098 1,732,549 5,197,648 2,598,824 1,299,412 649,706 324,853 974,560 487,280 243,640 121,820 60,910 30,455 91,366 45,683 137,050 68,525 205,576 102,788 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.