Properties of the Number 2069

Two Thousand Sixty-Nine

Basics

Value: 2068 → 2069 → 2070

Parity: odd

Prime: Yes

Previous Prime: 2063

Next Prime: 2081

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2069

Divisors: 1, 2069

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100000010101

Octal: 4025

Duodecimal: 1245

Hexadecimal: 815

Square: 4280761

Square Root: 45.48626166217664

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) = n + (n+1)². A28387

Primes whose binary representation is also the decimal representation of a prime. A65720

Primes of the form k² - k - 1. A2327

Friedlander-Iwaniec primes: Primes of form a² + b⁴. A28916

a(0) = 0. For n > 0, smallest non-palindromic number k such that the smallest palindrome in the Reverse and Add! trajectory of k is reached after exactly n iterations. A23109

Expansion of g.f. (1-x²)/(1-x-2·x²+x³). A28495

Number of permutations of length n within distance 3 of a fixed permutation. A2526

a(n) = n² - n - 1. A165900

Number of ways to split an integer partition of n into consecutive subsequences with weakly decreasing sums. A316245

Prime p concatenated with next prime is also prime. A30459