2² × 159937

Prime Factor Structure

Factorization String 2^2 × 159937

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 1,119,566

Proper Divisor Sum 479,818

Digit Sum / Digital Root 37 (Root: 1)

Adjacent Primes #639739 ← → #639757

1 2 4 159,937 319,874 639,748

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

639,748 319,874 159,937 479,812 239,906 119,953 359,860 179,930 89,965 269,896 134,948 67,474 33,737 101,212 50,606 25,303 75,910 37,955 113,866 56,933 170,800 85,400 42,700 21,350 10,675 32,026 16,013 48,040 24,020 12,010 6,005 18,016 9,008 4,504 2,252 1,126 563 1,690 845 2,536 1,268 634 317 952 476 238 119 358 179 538 269 808 404 202 101 304 152 76 38 19

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