Properties of the Number -622

Six Hundred Twenty-Two

Basics

Value: -623 → -622 → -621

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 × 311

Divisors: 1, 2, 311, 622

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1001101110

Octal: -1156

Duodecimal: -43A

Hexadecimal: -26e

Square: 386884

Square Root: 24.939927826679853

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

Expansion of 1/(1+x·c(x)), c(x) the g.f. of Catalan numbers A000108. A126983

Expansion of (1-x-x^N)/((1-x)(1-x²)(1-x³)...(1-x^N)) for N = 6. A60025

Expansion of (∏_j>=1 (1-(-x)^j) - 1)⁶ in powers of x. A1484

Triangle T(n,k), 0<=k<=n, read by rows given by :[ -1,1,1,1,1,1,1,...] δ [1,0,0,0,0,0,0,0,...] where δ is the operator defined in A084938. A127543

Expansion of (1+x)³/((1+x)³+x⁴). A99531

Riordan array (1/(1+x·c(x)), x·c(x)) where c(x) is the g.f. of Catalan numbers (A000108). A237619

a(1) = 1; a(n+1) = -∑_d∣n a(d)^n/d. A307781

Shifts left when Moebius transformation applied twice. A7551

a(n) = 4·a(n-2) - a(n-1), with a(0)=1, a(1)=-2. A122112

Numerator of Hermite(n, 5/19). A159622