Properties of the Number 1670

One Thousand Six Hundred Seventy

Basics

Value: 1669 → 1670 → 1671

Parity: even

Prime: No

Previous Prime: 1669

Next Prime: 1693

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 167

Divisors: 1, 2, 5, 10, 167, 334, 835, 1670

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 11010000110

Octal: 3206

Duodecimal: B72

Hexadecimal: 686

Square: 2788900

Square Root: 40.8656334834051

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 partitions of n such that some part is a sum of two or more other parts. A237668

Number of compositions of n such that at least two adjacent parts are equal. A261983

Numbers m such that the Bernoulli number B_m has denominator 66. A51230

Number of integer partitions of n whose negated run-lengths are not unimodal. A332639

Expansion of 1 + ∑_k>0 x^k^2/((1-x)(1-x²)...(1-x^2k)). A122129

Numbers k whose largest divisor <= sqrt(k) equals 10. A162530

T(n,k)=Number of nondecreasing arrangements of n numbers x(i) in -(n+k-2)..(n+k-2) with the sum of sign(x(i))*x(i)² zero. A188002

Triangle read by rows: T(n,k) = number of permutations of length n with exactly k rising or falling successions, for n >= 1, 0 <= k <= n-1. A1100

Numbers that are the sum of 8 successive primes. A127335

INVERTi transform of central trinomial coefficients (A002426). A7971