Properties of the Number 68544

Sixty-Eight Thousand Five Hundred Forty-Four

Basics

Value: 68543 → 68544 → 68545

Parity: even

Prime: No

Previous Prime: 68543

Next Prime: 68567

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ⁶ × 3 ² × 7 × 17

Divisors: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000101111000000

Octal: 205700

Duodecimal: 33800

Hexadecimal: 10bc0

Square: 4698279936

Square Root: 261.80909075125714

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

Expansion of e.g.f. exp( log(1 - x)⁴ / 4! ). A347003

Triangle read by rows: T(n, k) = number of matchings of 2n people with partners (of either sex) such that exactly k couples are left together. A55140

Nonnegative values·of solutions (x, y) to the Diophantine equation x²+(x+239)² = y². A204765

Triangle read by rows: T(n,k) is the number of sensed combinatorial maps with n edges and k vertices, 1 <= k <= n + 1. A380615

Sum of terms of n-th row of A077321. A77324

Least number m such that cardinality of InvPhi(m) = prime(n). A71389

a(n) is the least number with exactly n divisors of the form 5·k+1. A364586

a(n) is the least number with exactly n divisors of the form 5·k+4. A364600

Triangular array read by rows: T(n,k) is the number of ordered set partitions of {1,2,...,n} with exactly k singletons, n>=0, 0<=k<=n. A187784

Number of 5-cycles in the n-triangular graph. A290939