2,667,604

2² × 666901

Starting at 2,667,604, the Collatz iteration reaches 1 after 143 steps. The first transition is 1333802; the starting value is even with 6 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 666901

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 4,668,314

Proper Divisor Sum 2,000,710

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #2667601 ← → #2667611

Radix Representation

Decimal	2667604
Binary	1010001011010001010100 (22 bits)
Octal	0o12132124
Hexadecimal	0x28B454

Divisor Catalog (6)

1 2 4 666,901 1,333,802 2,667,604

Collatz Trajectory (143 steps to reach 1)

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

2,667,604 1,333,802 666,901 2,000,704 1,000,352 500,176 250,088 125,044 62,522 31,261 93,784 46,892 23,446 11,723 35,170 17,585 52,756 26,378 13,189 39,568 19,784 9,892 4,946 2,473 7,420 3,710 1,855 5,566 2,783 8,350 4,175 12,526 6,263 18,790 9,395 28,186 14,093 42,280 21,140 10,570 5,285 15,856 7,928 3,964 1,982 991 2,974 1,487 4,462 2,231 6,694 3,347 10,042 5,021 15,064 7,532 3,766 1,883 5,650 2,825

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