Properties of the Number 8165

Eight Thousand One Hundred Sixty-Five

Basics

Value: 8164 → 8165 → 8166

Parity: odd

Prime: No

Previous Prime: 8161

Next Prime: 8167

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 23 × 71

Divisors: 1, 5, 23, 71, 115, 355, 1633, 8165

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111111100101

Octal: 17745

Duodecimal: 4885

Hexadecimal: 1fe5

Square: 66667225

Square Root: 90.36038955205981

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 partitions of n such that some part is a sum of two other parts. A237113

Triangle read by rows: T(n,k) is the number of unlabeled simple graphs on n vertices with independence number k. A263341

a(n) = 2ⁿ - (2·n+1). A70313

Numbers that are the sum of ten fourth powers in eight or more ways. A345601

Numbers that are the sum of ten fourth powers in nine or more ways. A345602

π(n) is a power of 2, where π(n) = A000720(n) is the number of primes <= n. A73798

Numbers that are the sum of ten fourth powers in ten or more ways. A345603

Numbers that are the sum of ten fourth powers in exactly ten ways. A345862

Number of subsets of {1..n} containing n such that every subset has a different sum. A325866

Numbers whose square starts with 4 identical digits. A132391