Properties of the Number 82865

Eighty-Two Thousand Eight Hundred Sixty-Five

Basics

Value: 82864 → 82865 → 82866

Parity: odd

Prime: No

Previous Prime: 82847

Next Prime: 82883

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 × 16573

Divisors: 1, 5, 16573, 82865

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100001110110001

Octal: 241661

Duodecimal: 3BB55

Hexadecimal: 143b1

Square: 6866608225

Square Root: 287.862814548875

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 the k-th triangular number contains only digits {3,4,5}. A119183

Numbers k such that k and k² use only the digits 0, 2, 5, 6 and 8. A136913

Number of positive integers <= 2ⁿ of the form x² + 5·y². A54150

a(1) = 1, a(2n) = smallest prime > (2n-1)-th partial sum of the sequence itself and a(2n+1) = smallest composite number > 2n-th partial sum of the sequence. A76636

a(n) is the sum of the preceding terms that are coprime to n. A82865

Continued fraction using the decimal digits of π. A191359