Properties of the Number -6720

Seven Hundred Twenty

Basics

Value: -6721 → -6720 → -6719

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ⁶ × 3 × 5 × 7

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -1101001000000

Octal: -15100

Duodecimal: -3A80

Hexadecimal: -1a40

Square: 45158400

Square Root: 81.97560612767678

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

Cumulant expansion numbers: Coefficients in expansion of log(1 + ∑_k>=1 x[k]*(t^k)/k!). A127671

Generalized Stirling number triangle of first kind read by rows: T(n, k) = [x^k] ∏_m=1..n (x - m - r), with r = 3. A49459

Coefficient triangle of generalized Laguerre polynomials n!*L(n,2,x) (rising powers of x). A62139

Triangle read by rows. The numerators of the coefficients of the Faulhaber polynomials. T(n,k) for n >= 0 and 0 <= k <= n. A335951

Triangle read by rows: T(n,k) = logarithmic polynomial G_kⁿ(x) evaluated at x=1. A260322

Expansion of 1/cos(log(1+x)). A9007

Expansion of 8 * η(q)⁷ / η(q⁷) + 49 * (η(q) * η(q⁷))³ in powers of q. A138809

Triangle read by rows: T(n,k) = logarithmic polynomial A_kⁿ(x) evaluated at x=1. A260324

Triangle read by rows. T(n, k) = ∑_j=0..n-k binomial(-n, j) * A268437(n - k, j). A357339

Expansion of ∏_m>=1 (1 - m·q^m)⁸. A22668