1,663,263

3² × 7 × 17 × 1553

1,663,263 factors as 3^2 × 7 × 17 × 1553. Its 24 positive divisors give a proper-divisor sum of 1,245,825, so this integer is deficient. The Collatz stopping time is 137 steps.

Prime Factor Structure

Factorization String 3^2 × 7 × 17 × 1553

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 2,909,088

Proper Divisor Sum 1,245,825

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #1663223 ← → #1663267

Radix Representation

Decimal	1663263
Binary	110010110000100011111 (21 bits)
Octal	0o6260437
Hexadecimal	0x19611F

Divisor Catalog (24)

Collatz Trajectory (137 steps to reach 1)

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

1,663,263 4,989,790 2,494,895 7,484,686 3,742,343 11,227,030 5,613,515 16,840,546 8,420,273 25,260,820 12,630,410 6,315,205 18,945,616 9,472,808 4,736,404 2,368,202 1,184,101 3,552,304 1,776,152 888,076 444,038 222,019 666,058 333,029 999,088 499,544 249,772 124,886 62,443 187,330 93,665 280,996 140,498 70,249 210,748 105,374 52,687 158,062 79,031 237,094 118,547 355,642 177,821 533,464 266,732 133,366 66,683 200,050 100,025 300,076 150,038 75,019 225,058 112,529 337,588 168,794 84,397 253,192 126,596 63,298

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