Properties of the Number 77985

Seventy-Seven Thousand Nine Hundred Eighty-Five

Basics

Value: 77984 → 77985 → 77986

Parity: odd

Prime: No

Previous Prime: 77983

Next Prime: 77999

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 1733

Divisors: 1, 3, 5, 9, 15, 45, 1733, 5199, 8665, 15597

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000010100001

Octal: 230241

Duodecimal: 39169

Hexadecimal: 130a1

Square: 6081660225

Square Root: 279.2579452764057

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 whose base-4 representation is a square when read in base 10. A267764

Expansion of 1/(1 + 2·x - x²). A77985

The numbers formed by removing the required digits to form the number from a set of digits which is initially empty and that has digits added via the addition of numbers which cannot be created from the digits currently in the set. Start by trying to create the number 0. A331276

Number of nX6 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j). A230182