Properties of the Number 66787

Sixty-Six Thousand Seven Hundred Eighty-Seven

Basics

Value: 66786 → 66787 → 66788

Parity: odd

Prime: No

Previous Prime: 66763

Next Prime: 66791

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 7 ² × 29 × 47

Divisors: 1, 7, 29, 47, 49, 203, 329, 1363, 1421, 2303

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 10000010011100011

Octal: 202343

Duodecimal: 32797

Hexadecimal: 104e3

Square: 4460503369

Square Root: 258.43180918764625

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

Number of polyforms with n cells on the faces of a rhombic triacontahedron up to rotation and reflection. A383490

Numbers n such that d(n-2) = d(n) = d(n+2) = 12 where d(n)=A000005(n). A190645

a(n) = gcd(2ⁿ + 1, n² + 1). A66787

Least k such that A097708(n)+k is prime. A97709