Properties of the Number 68781

Sixty-Eight Thousand Seven Hundred Eighty-One

Basics

Value: 68780 → 68781 → 68782

Parity: odd

Prime: No

Previous Prime: 68777

Next Prime: 68791

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 101 × 227

Divisors: 1, 3, 101, 227, 303, 681, 22927, 68781

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000110010101101

Octal: 206255

Duodecimal: 33979

Hexadecimal: 10cad

Square: 4730825961

Square Root: 262.26132006073635

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 k such that sum of the divisors of k equals the sum of the reversals of the divisors of k. Numbers with all palindrome divisors are not in the sequence. A196677

Number of zero-sum -7..7 arrays of n elements with first through third differences also in -7..7. A202510

Number of zero-sum -n..n arrays of 7 elements with first through third differences also in -n..n. A202515

Fibonacci sequence beginning 1, 26. A22396

Lesser of two consecutive numbers each divisible by a square. A68781

T(n,k)=Number of zero-sum -k..k arrays of n elements with first through third differences also in -k..k. A202511