Properties of the Number 12647

Twelve Thousand Six Hundred Forty-Seven

Basics

Value: 12646 → 12647 → 12648

Parity: odd

Prime: Yes

Previous Prime: 12641

Next Prime: 12653

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 12647

Divisors: 1, 12647

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000101100111

Octal: 30547

Duodecimal: 739B

Hexadecimal: 3167

Square: 159946609

Square Root: 112.45888137448283

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

a(n) = ∑_d∣n (n/d)^d-1. A87909

a(0) = 2; a(n) for n > 0 is the smallest prime greater than a(n-1) that differs from a(n-1) by a square. A73609

Father primes of order 8. A136077

Second member of a sexy prime quadruple: value of p+6 such that p, p+6, p+12 and p+18 are all prime. A46122

Smaller term of closest safe prime pairs. A59323

Primes congruent to 19 mod 41. A142216

Times on a 12-hour digital clock with 6 digits at which the three continuously moving hands of an analog clock, in the best approximation, enclose the same angles with one another, i.e., have the smallest sum of squares of the deviations from 120 degrees. When interpreting the terms as times of the day in the form hh:mm:ss, padding to the left with zeros is assumed. A347040

Second term of balanced prime quartets: p(m)-p(m-1) = p(m+1)-p(m) = p(m+2)-p(m+1). A54801

Numbers k such that k and k+6 are both balanced primes. A173892

First of a run of 4 or more consecutive primes which all equal 2 (mod 3). A185941