Properties of the Number 61684

Sixty-One Thousand Six Hundred Eighty-Four

Basics

Value: 61683 → 61684 → 61685

Parity: even

Prime: No

Previous Prime: 61681

Next Prime: 61687

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 7 × 2203

Divisors: 1, 2, 4, 7, 14, 28, 2203, 4406, 8812, 15421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111000011110100

Octal: 170364

Duodecimal: 2B844

Hexadecimal: f0f4

Square: 3804915856

Square Root: 248.36263809196421

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

The first of 50 consecutive positive integers the sum of the squares of which is a square. A269451

a(n) is the smallest k such that number of non-unitary prime divisors of central binomial coefficient, A000984(k) = C(2·k,k) equals n. A81393

Expansion of ∏_k>=1 (1 - 2·x^k)/(1 + 2·x^k). A303397

Integer lengths of the Mills primes A051254. A224845

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, -1, 1), (-1, 0, 0), (1, 0, -1), (1, 1, 0)}. A149093

Generalized Bell numbers: column 3 of A275043. A61684

Array read by antidiagonals: T(n,k) is the number of color patterns (set partitions) in an oriented cycle of length n using k or fewer colors (subsets). A320747