Properties of the Number -26609

Twenty-Six Thousand Six Hundred Nine

Basics

Value: -26610 → -26609 → -26608

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 11 × 41 × 59

Divisors: 1, 11, 41, 59, 451, 649, 2419, 26609

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110011111110001

Octal: -63761

Duodecimal: -13495

Hexadecimal: -67f1

Square: 708038881

Square Root: 163.12265323982442

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = Fibonacci(n+1) - 2^floor(n/2). A5672

Numbers k such that σ(k+2) = σ(k). A7373

Number A(n,k) of Dyck paths of semilength k·n and height n; square array A(n,k), n>=0, k>=0, read by antidiagonals. A289481

Expansion of x/((1-x-x³)*(1-x)⁷). A144901

a(n) = ∑_k=1..n T(n,k), array T as in A049790. A49791

Number of balanced parenthesis expressions of length 2n and depth 3. A258109

Numbers k such that k and k+2 have the same number (A000005) and sum of divisors (A000203). A229254

Let b(k) = A164555(k)/A027642(k), the sequence of "original" Bernoulli numbers with -1 instead of A164555(0)=1; then a(n) = numerator of the n-th term of the binomial transform of the b(k) sequence. A235774

Products of three distinct strong primes. A363782

Numbers k such that k⁶*2^k - 1 is a prime. A367478