Properties of the Number 17666

Seventeen Thousand Six Hundred Sixty-Six

Basics

Value: 17665 → 17666 → 17667

Parity: even

Prime: No

Previous Prime: 17659

Next Prime: 17669

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 11 ² × 73

Divisors: 1, 2, 11, 22, 73, 121, 146, 242, 803, 1606

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100010100000010

Octal: 42402

Duodecimal: A282

Hexadecimal: 4502

Square: 312087556

Square Root: 132.9135057095403

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

Beastly (or hateful) numbers: numbers containing the string 666 in their decimal expansion. A51003

Number of partitions of n that do not contain 6 as a part. A27340

Numbers that are the sum of an emirp and its reversal in more than one way. A345408

Numbers n for which there are exactly twelve k such that n = k + reverse(k). A72435

Numbers k such that 7·10^k + R_k + 2 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A103050

Sum of the squares of the first n squarefree numbers. A111715

Coefficients of a new recursive polynomial: a = 11; b = 19; c = -8; r(x,n)=(a·x + b)*r(x, n - 1) + c·r(x, n - 2). A146751

Numbers k which are concatenations k=x//y such that x² + y² is a multiple of k. A162463

Sums of powers of roots of x³ - 2·x² - x - 2. A356563

Denominator of sum of reciprocals of divisors of n. A17666