3² × 71081

Prime Factor Structure

Factorization String 3^2 × 71081

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 924,066

Proper Divisor Sum 284,337

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #639719 ← → #639731

1 3 9 71,081 213,243 639,729

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

639,729 1,919,188 959,594 479,797 1,439,392 719,696 359,848 179,924 89,962 44,981 134,944 67,472 33,736 16,868 8,434 4,217 12,652 6,326 3,163 9,490 4,745 14,236 7,118 3,559 10,678 5,339 16,018 8,009 24,028 12,014 6,007 18,022 9,011 27,034 13,517 40,552 20,276 10,138 5,069 15,208 7,604 3,802 1,901 5,704 2,852 1,426 713 2,140 1,070 535 1,606 803 2,410 1,205 3,616 1,808 904 452 226 113

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