6,581,378

2 × 3290689

Starting at 6,581,378, the Collatz iteration reaches 1 after 90 steps. The first transition is 3290689; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 3290689

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 9,872,070

Proper Divisor Sum 3,290,692

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #6581371 ← → #6581387

Radix Representation

Decimal	6581378
Binary	11001000110110010000010 (23 bits)
Octal	0o31066202
Hexadecimal	0x646C82

Divisor Catalog (4)

1 2 3,290,689 6,581,378

Collatz Trajectory (90 steps to reach 1)

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

6,581,378 3,290,689 9,872,068 4,936,034 2,468,017 7,404,052 3,702,026 1,851,013 5,553,040 2,776,520 1,388,260 694,130 347,065 1,041,196 520,598 260,299 780,898 390,449 1,171,348 585,674 292,837 878,512 439,256 219,628 109,814 54,907 164,722 82,361 247,084 123,542 61,771 185,314 92,657 277,972 138,986 69,493 208,480 104,240 52,120 26,060 13,030 6,515 19,546 9,773 29,320 14,660 7,330 3,665 10,996 5,498 2,749 8,248 4,124 2,062 1,031 3,094 1,547 4,642 2,321 6,964

← Previous Integer #6,581,377 Browse Full Index Next Integer #6,581,379 →