Properties of the Number 807

Eight Hundred Seven

Basics

Value: 806 → 807 → 808

Parity: odd

Prime: No

Previous Prime: 797

Next Prime: 809

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 269

Divisors: 1, 3, 269, 807

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1100100111

Octal: 1447

Duodecimal: 573

Hexadecimal: 327

Square: 651249

Square Root: 28.407745422683583

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

Antisigma(n): Sum of the numbers less than n that do not divide n. A24816

Number of fractions in Farey series of order n. A5728

Start with 1 and repeatedly reverse the decimal digits and add 4 to get the next term. A117828

Flavius Josephus's sieve: Start with the natural numbers; at the k-th sieving step, remove every (k+1)-st term of the sequence remaining after the (k-1)-st sieving step; iterate. A960

Number of compositions of n whose negation is not unimodal. A332669

Expansion of 1/(x¹⁰+x⁹-x⁷-x⁶-x⁵-x⁴-x³+x+1) (inverse of Salem polynomial). A29826

Numbers m such that the Bernoulli number B_2·m has denominator 42. A51227

Number of integer partitions of n whose first differences (assuming the last part is zero) are unimodal. A332283

Number of partitions of n in which the greatest part is 10. A26816

Numbers k such that the largest prime factor of k²-1 is 101. A181568