2⁴ × 5 × 13 × 661

Prime Factor Structure

Factorization String 2^4 × 5 × 13 × 661

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 40

Divisor Sum (σ) 1,723,848

Proper Divisor Sum 1,036,408

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #687437 ← → #687443

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

687,440 343,720 171,860 85,930 42,965 128,896 64,448 32,224 16,112 8,056 4,028 2,014 1,007 3,022 1,511 4,534 2,267 6,802 3,401 10,204 5,102 2,551 7,654 3,827 11,482 5,741 17,224 8,612 4,306 2,153 6,460 3,230 1,615 4,846 2,423 7,270 3,635 10,906 5,453 16,360 8,180 4,090 2,045 6,136 3,068 1,534 767 2,302 1,151 3,454 1,727 5,182 2,591 7,774 3,887 11,662 5,831 17,494 8,747 26,242

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