Properties of the Number 16670

Sixteen Thousand Six Hundred Seventy

Basics

Value: 16669 → 16670 → 16671

Parity: even

Prime: No

Previous Prime: 16661

Next Prime: 16673

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 1667

Divisors: 1, 2, 5, 10, 1667, 3334, 8335, 16670

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000100011110

Octal: 40436

Duodecimal: 9792

Hexadecimal: 411e

Square: 277888900

Square Root: 129.11235417263524

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 fax numbers: numbers containing the fax number of the Beast (667, one more than its regular number) in their decimal expansion. A138563

a(n) = A273059(4n+1). A275917

Triangle read by rows. Number T(n, k) of partitions of the multiset [1, 1, 1, 1, 1, 2, 2, 2, 2, 2, ..., n, n, n, n, n] into k nonempty subsets, for 5 <= k <= 5n. A360039

Number of (w,x,y) with all terms in {0,...,n} and w ≠ x and x > range(w,x,y). A212969

Records in A341755 (= length of chain of (k,k+1) sharing a digit with k+(k+1), starting at n). A341756

Number of 4 X 4 X 4 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n. A166212

Triangle read by rows: T(n,k) = a(k)*binomial(n,k) (0 <= k <= n), where a(0)=1, a(1)=2, a(k) = a(k-1) + 3·a(k-2) for k >= 2 (a(k) = A006138(k)). A124959

Smallest prime p such that there is a gap of 2ⁿ between p and the next prime. A62529

Decimal expansion of log(47). A16670

Lexicographically earliest sequence of distinct positive terms such that the sum of two consecutive terms has at least 5 distinct prime factors. A280659