Properties of the Number 66549

Sixty-Six Thousand Five Hundred Forty-Nine

Basics

Value: 66548 → 66549 → 66550

Parity: odd

Prime: No

Previous Prime: 66541

Next Prime: 66553

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 3169

Divisors: 1, 3, 7, 21, 3169, 9507, 22183, 66549

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000001111110101

Octal: 201765

Duodecimal: 32619

Hexadecimal: 103f5

Square: 4428769401

Square Root: 257.9709285946771

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) = p(n)*p(n+1)*(p(n+1) - p(n)) + 1, where p(n) = prime(n). A383242

a(n) = (1/2)*((n+2)*P(n-1)+(5·n+1)*P(n)) where P() = A000129 are the Pell numbers. A187915

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (0, 1, 1), (1, -1, 0), (1, 0, 0)}. A150016

Let N = 235711171923293137..., the concatenation of the primes. a(n) is the n-digit number formed from the digits of N starting from the {n(n-1)/2 +1}th digit. Omit any leading zeros. A66549