Properties of the Number -2623

Six Hundred Twenty-Three

Basics

Value: -2624 → -2623 → -2622

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 43 × 61

Divisors: 1, 43, 61, 2623

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -101000111111

Octal: -5077

Duodecimal: -1627

Hexadecimal: -a3f

Square: 6880129

Square Root: 51.21523210920751

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

E.g.f.: cos(arctanh(x)*exp(x))=1-1/2!*x²-6/3!*x³-31/4!*x⁴-140/5!*x⁵... A12714

Number of integer partitions of n that can be partitioned into two or more blocks with equal sums. A321452

Coordination sequence for (3,3,7) tiling of hyperbolic plane. A265074

Total sum T(n,k) of the sizes of all blocks with maximal element k in all set partitions of {1,2,...,n}; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A270701

Total sum T(n,k) of the sizes of all blocks with minimal element k in all set partitions of {1,2,...,n}; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A270702

a(n) = n*(n + 18). A98850

MM-numbers of nesting multiset partitions. A326256

a(n) = 2·n² + n - 5. A100040

MM-numbers of capturing multiset partitions. A326255

Numbers k such that φ(k) = φ(k+4), with Euler's totient function φ = A000010. A179186