7² × 11 × 29 × 41

Prime Factor Structure

Factorization String 7^2 × 11 × 29 × 41

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 861,840

Proper Divisor Sum 220,969

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #640859 ← → #640873

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

640,871 1,922,614 961,307 2,883,922 1,441,961 4,325,884 2,162,942 1,081,471 3,244,414 1,622,207 4,866,622 2,433,311 7,299,934 3,649,967 10,949,902 5,474,951 16,424,854 8,212,427 24,637,282 12,318,641 36,955,924 18,477,962 9,238,981 27,716,944 13,858,472 6,929,236 3,464,618 1,732,309 5,196,928 2,598,464 1,299,232 649,616 324,808 162,404 81,202 40,601 121,804 60,902 30,451 91,354 45,677 137,032 68,516 34,258 17,129 51,388 25,694 12,847 38,542 19,271 57,814 28,907 86,722 43,361 130,084 65,042 32,521 97,564 48,782 24,391

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