Properties of the Number -620166

Six Hundred Twenty Thousand One Hundred Sixty-Six

Basics

Value: -620167 → -620166 → -620165

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 41 × 2521

Divisors: 1, 2, 3, 6, 41, 82, 123, 246, 2521, 5042

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10010111011010000110

Octal: -2273206

Duodecimal: -25AA86

Hexadecimal: -97686

Square: 384605867556

Square Root: 787.5061904518592

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) = L(4·n+2)/3, where L=A000032 (the Lucas sequence). A49685

L(n,n), where L is defined as in A108299. A108366

Generalized Markoff numbers: largest of 7-tuple of positive numbers a, b, c, d, e, f, g satisfying the Markoff(7) equation a²+b²+c²+d²+e²+f²+g² = 7abcdefg. A227214

a(n) = (F(8·n+7)+F(8·n+5))/3, where F=A000045 (the Fibonacci sequence). A49679

a(n) = (a(n-1) * a(n-5) + 1) / a(n-6), a(0) = a(1) = ... = a(5) = 1. A276529

Rectangular array R read by descending antidiagonals: divide the multiples of 3 in the Wythoff array (A035513) by 3, and delete all others. A328697

Triangle T(n, k) = (k·ChebyshevU(n, (k+2)/2) + 2·ChebyshevT(n+1, (k+2)/2))/2. A121872

Expansion of (x-x³)/(1-3·x+2·x²-3·x³+x⁴). A140824

a(n) = ∏_k=1..(n-1)/2 (5 + 4·cos(k*π/n)²). A152119

Integer Quotients of Lucas Numbers; a rectangular array by downward antidiagonals. A143790