646991

Prime Factor Structure

Factorization String 646991

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 646,992

Proper Divisor Sum 1

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #646981 ← → #646993

1 646,991

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

646,991 1,940,974 970,487 2,911,462 1,455,731 4,367,194 2,183,597 6,550,792 3,275,396 1,637,698 818,849 2,456,548 1,228,274 614,137 1,842,412 921,206 460,603 1,381,810 690,905 2,072,716 1,036,358 518,179 1,554,538 777,269 2,331,808 1,165,904 582,952 291,476 145,738 72,869 218,608 109,304 54,652 27,326 13,663 40,990 20,495 61,486 30,743 92,230 46,115 138,346 69,173 207,520 103,760 51,880 25,940 12,970 6,485 19,456 9,728 4,864 2,432 1,216 608 304 152 76 38 19

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