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Properties of the Number 16662

Sixteen Thousand Six Hundred Sixty-Two

Basics

Value: 16661 → 16662 → 16663

Parity: even

Prime: No

Previous Prime: 16661

Next Prime: 16673

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 2777

Divisors: 1, 2, 3, 6, 2777, 5554, 8331, 16662

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000100010110

Octal: 40426

Duodecimal: 9786

Hexadecimal: 4116

Square: 277622244

Square Root: 129.08136968594656

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

Beastly (or hateful) numbers: numbers containing the string 666 in their decimal expansion. A51003
Number of Hamiltonian paths in the graph on n vertices {1,...,n}, with i adjacent to j iff |i-j| <= 2. A69241
Indices k such that A019326(k)=φ[k](8) is prime, where φ is a cyclotomic polynomial. A138938
1/4 the number of (n+1) X 6 binary arrays with all 2 X 2 subblock sums the same. A183982
Number of partitions of n with difference 2 between the number of odd parts and the number of even parts, both counted without multiplicity. A242693
Numbers whose base-4 representation contains exactly three 0's and four 1's. A45032
Numbers k such that k and k2 use only the digits 1, 2, 4, 6 and 7. A136993
Least k such that k·6n-1 , k·6n+1, and 2·k*6n-1 are prime; that is, twin primes and a Sophie Germain prime. A212481
Number of n X 2 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A279866
Number of 2 X 2 matrices with all elements in 0..n such that the sum of the elements is prime. A281550