646,550

2 × 5² × 67 × 193

646,550 factors as 2 × 5^2 × 67 × 193. Its 24 positive divisors give a proper-divisor sum of 580,306, so this integer is deficient. The Collatz stopping time is 216 steps.

Prime Factor Structure

Factorization String 2 × 5^2 × 67 × 193

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,226,856

Proper Divisor Sum 580,306

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #646549 ← → #646571

Radix Representation

Decimal	646550
Binary	10011101110110010110 (20 bits)
Octal	0o2356626
Hexadecimal	0x9DD96

Divisor Catalog (24)

Collatz Trajectory (216 steps to reach 1)

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

646,550 323,275 969,826 484,913 1,454,740 727,370 363,685 1,091,056 545,528 272,764 136,382 68,191 204,574 102,287 306,862 153,431 460,294 230,147 690,442 345,221 1,035,664 517,832 258,916 129,458 64,729 194,188 97,094 48,547 145,642 72,821 218,464 109,232 54,616 27,308 13,654 6,827 20,482 10,241 30,724 15,362 7,681 23,044 11,522 5,761 17,284 8,642 4,321 12,964 6,482 3,241 9,724 4,862 2,431 7,294 3,647 10,942 5,471 16,414 8,207 24,622

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