Properties of the Number -6726

Seven Hundred Twenty-Six

Basics

Value: -6727 → -6726 → -6725

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 19 × 59

Divisors: 1, 2, 3, 6, 19, 38, 57, 59, 114, 118

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101001000110

Octal: -15106

Duodecimal: -3A86

Hexadecimal: -1a46

Square: 45239076

Square Root: 82.0121942152507

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

G.f.: ∏_n>=1 (1 - A002203(n)*xⁿ + (-1)ⁿ*x^2·n) where A002203(n) is the companion Pell numbers. A204382

Companion Pell numbers: a(n) = 2·a(n-1) + a(n-2), a(0) = a(1) = 2. A2203

Number of points on surface of octahedron; also coordination sequence for cubic lattice: a(0) = 1; for n > 0, a(n) = 4n² + 2. A5899

Number of corners, or planar partitions of n with only one row and one column. A6330

a(n) = 6·a(n-1) - a(n-2), with a(0) = 2, a(1) = 6. A3499

Number of integer partitions of n whose length and maximum both divide n. A326843

Numbers such that floor(a(n)² / 8) is again a square. A204514

Rectangular array A: first differences of row entries of array A294099, read by antidiagonals. A298675

Union_{odd primes p, n >= 3} {T_p(n)}, where T_m(x) = x·T_m-1(x) - T_m-2(x), m >= 2, T₀(x) = 2, T₁(x) = x (dilated Chebyshev polynomials of the first kind). A299071

T(n,k) = Number of length n+2 0..k arrays with no three elements in a row with pattern aba (with a≠b) and new values 0..k introduced in 0..k order. A243607