Properties of the Number 65018

Sixty-Five Thousand Eighteen

Basics

Value: 65017 → 65018 → 65019

Parity: even

Prime: No

Previous Prime: 65011

Next Prime: 65027

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 19 × 29 × 59

Divisors: 1, 2, 19, 29, 38, 58, 59, 118, 551, 1102

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111110111111010

Octal: 176772

Duodecimal: 31762

Hexadecimal: fdfa

Square: 4227340324

Square Root: 254.98627414039368

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

Number of positive subset sums of strict integer partitions of n. A284640

a(n) = 2·A000447(n). A259110

The floor[n^3/4]-perfect numbers, where f-perfect numbers for an arithmetical function f is defined in A066218. A66363

Numbers N such that concatenation of N, N, and·generates a prime for x=1 and x=3 and x=7 and x=9. A210515

Number of 2 X n 0..1 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors. A232048

a(n) = ∑_d∣n σ(d)². A65018

G.f. satisfies: A(x) = 1 + x·A(x)⁴*A(x·A(x)⁴). A215506

Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock summing to a prime. A251405