λ
Sequence Observatory

6,549,890

2 × 5 × 79 × 8291
Deficient Even Composite

Starting at 6,549,890, the Collatz iteration reaches 1 after 209 steps. The first transition is 3274945; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 79 × 8291
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 11,940,480
Proper Divisor Sum 5,390,590
Digit Sum / Digital Root 41 (Root: 5)
Adjacent Primes #6549877 ← → #6549901

Radix Representation

Decimal 6549890
Binary 11000111111000110000010 (23 bits)
Octal 0o30770602
Hexadecimal 0x63F182

Divisor Catalog (16)

1 2 5 10 79 158 395 790 8,291 16,582 41,455 82,910 654,989 1,309,978 3,274,945 6,549,890

Collatz Trajectory (209 steps to reach 1)

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

6,549,890 3,274,945 9,824,836 4,912,418 2,456,209 7,368,628 3,684,314 1,842,157 5,526,472 2,763,236 1,381,618 690,809 2,072,428 1,036,214 518,107 1,554,322 777,161 2,331,484 1,165,742 582,871 1,748,614 874,307 2,622,922 1,311,461 3,934,384 1,967,192 983,596 491,798 245,899 737,698 368,849 1,106,548 553,274 276,637 829,912 414,956 207,478 103,739 311,218 155,609 466,828 233,414 116,707 350,122 175,061 525,184 262,592 131,296 65,648 32,824 16,412 8,206 4,103 12,310 6,155 18,466 9,233 27,700 13,850 6,925

More profiles

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