Properties of the Number 207

Two Hundred Seven

Basics

Value: 206 → 207 → 208

Parity: odd

Prime: No

Previous Prime: 199

Next Prime: 211

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 23

Divisors: 1, 3, 9, 23, 69, 207

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001111

Octal: 317

Duodecimal: 153

Hexadecimal: cf

Square: 42849

Square Root: 14.38749456993816

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

Coordination sequence for planar net 3.3.3.3.6 (also called the fsz net). A250120

Toothpick sequence (see Comments lines for definition). A139250

Numbers that are the product of exactly three (not necessarily distinct) primes. A14612

a(n) = ∑_k=1..n floor(n/k); also ∑_k=1..n d(k), where d = number of divisors (A000005); also number of solutions to x·y = z with 1 <= x,y,z <= n. A6218

a(n) = 4·n + 3. A4767

Number of integer partitions of n with distinct differences between successive parts. A325325

Numbers of pattern-matching permutations of (1234) for the permutations of {1, 2, ..., n} on n = 4, 5, 6, ... elements. A158005

Wedderburn-Etherington numbers: unlabeled binary rooted trees (every node has outdegree 0 or 2) with n endpoints (and 2n-1 nodes in all). A1190

Numbers that contain a digit 0. A11540

a(n) = 6·n+3. A16945