Properties of the Number 67880

Sixty-Seven Thousand Eight Hundred Eighty

Basics

Value: 67879 → 67880 → 67881

Parity: even

Prime: No

Previous Prime: 67867

Next Prime: 67883

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 5 × 1697

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 1697, 3394

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000100100101000

Octal: 204450

Duodecimal: 33348

Hexadecimal: 10928

Square: 4607694400

Square Root: 260.5379051117131

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

Numbers n such that there is both a square and a triangular number strictly between n³ and n³+n. A246042

Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A259005

Number of nonempty subsets of {1,2,...,n} in which exactly 4/5 of the elements are <= (n-4)/2. A48068

Numbers k such that φ(k) = φ(σ(k)-k). A67880