6,663,621

3 × 487 × 4561

Starting at 6,663,621, the Collatz iteration reaches 1 after 134 steps. The first transition is 19990864; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 3 × 487 × 4561

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 8,905,024

Proper Divisor Sum 2,241,403

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #6663617 ← → #6663647

Radix Representation

Decimal	6663621
Binary	11001011010110111000101 (23 bits)
Octal	0o31326705
Hexadecimal	0x65ADC5

Divisor Catalog (8)

1 3 487 1,461 4,561 13,683 2,221,207 6,663,621

Collatz Trajectory (134 steps to reach 1)

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

6,663,621 19,990,864 9,995,432 4,997,716 2,498,858 1,249,429 3,748,288 1,874,144 937,072 468,536 234,268 117,134 58,567 175,702 87,851 263,554 131,777 395,332 197,666 98,833 296,500 148,250 74,125 222,376 111,188 55,594 27,797 83,392 41,696 20,848 10,424 5,212 2,606 1,303 3,910 1,955 5,866 2,933 8,800 4,400 2,200 1,100 550 275 826 413 1,240 620 310 155 466 233 700 350 175 526 263 790 395 1,186

← Previous Integer #6,663,620 Browse Full Index Next Integer #6,663,622 →