687,571

37 × 18583

687,571 factors as 37 × 18583. Its 4 positive divisors give a proper-divisor sum of 18,621, so this integer is deficient. The Collatz stopping time is 105 steps.

Prime Factor Structure

Factorization String 37 × 18583

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 706,192

Proper Divisor Sum 18,621

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #687559 ← → #687581

Radix Representation

Decimal	687571
Binary	10100111110111010011 (20 bits)
Octal	0o2476723
Hexadecimal	0xA7DD3

Divisor Catalog (4)

1 37 18,583 687,571

Collatz Trajectory (105 steps to reach 1)

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

687,571 2,062,714 1,031,357 3,094,072 1,547,036 773,518 386,759 1,160,278 580,139 1,740,418 870,209 2,610,628 1,305,314 652,657 1,957,972 978,986 489,493 1,468,480 734,240 367,120 183,560 91,780 45,890 22,945 68,836 34,418 17,209 51,628 25,814 12,907 38,722 19,361 58,084 29,042 14,521 43,564 21,782 10,891 32,674 16,337 49,012 24,506 12,253 36,760 18,380 9,190 4,595 13,786 6,893 20,680 10,340 5,170 2,585 7,756 3,878 1,939 5,818 2,909 8,728 4,364

More profiles

Browse other published profiles and their separate link collections.

No other profiles in this collection.

← Previous Integer #687,570 Browse Full Index Next Integer #687,572 →