3² × 5² × 7 × 409

Prime Factor Structure

Factorization String 3^2 × 5^2 × 7 × 409

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 1,321,840

Proper Divisor Sum 677,665

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #644173 ← → #644191

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

644,175 1,932,526 966,263 2,898,790 1,449,395 4,348,186 2,174,093 6,522,280 3,261,140 1,630,570 815,285 2,445,856 1,222,928 611,464 305,732 152,866 76,433 229,300 114,650 57,325 171,976 85,988 42,994 21,497 64,492 32,246 16,123 48,370 24,185 72,556 36,278 18,139 54,418 27,209 81,628 40,814 20,407 61,222 30,611 91,834 45,917 137,752 68,876 34,438 17,219 51,658 25,829 77,488 38,744 19,372 9,686 4,843 14,530 7,265 21,796 10,898 5,449 16,348 8,174 4,087

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