Properties of the Number 99690

Ninety-Nine Thousand Six Hundred Ninety

Basics

Value: 99689 → 99690 → 99691

Parity: even

Prime: No

Previous Prime: 99689

Next Prime: 99707

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 3323

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 3323, 6646

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11000010101101010

Octal: 302552

Duodecimal: 49836

Hexadecimal: 1856a

Square: 9938096100

Square Root: 315.7372325209683

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

Triangle T(n,k) defined by ∑_k=1..n T(n,k)*u^k*xⁿ/n! = exp(∑_n>0 u·d(n)*xⁿ/n!), where d(n) is the number of divisors of n. A338870

a(n) is the number of ways to select 3 distinct points forming a triangle of unsigned area = n from a square of grid points with side length n, divided by 4. A320542

Suppose you take the ten digits 0..9, arrange them in any order and then either concatenate adjacent ones or separate them with a plus or minus sign, e.g., 98-76+5-4-32+10 or 9-8-765+3041-2. The first expression totals to "1", the second example totals to "2275". This sequence lists the positive integers that cannot be expressed in this way. A108224

Consider the family of multigraphs enriched by the species of mod-6 sets. Sequence gives number of those multigraphs with 6n loops and arcs. A99690