Properties of the Number 62805

Sixty-Two Thousand Eight Hundred Five

Basics

Value: 62804 → 62805 → 62806

Parity: odd

Prime: No

Previous Prime: 62801

Next Prime: 62819

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 53 × 79

Divisors: 1, 3, 5, 15, 53, 79, 159, 237, 265, 395

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1111010101010101

Octal: 172525

Duodecimal: 30419

Hexadecimal: f555

Square: 3944468025

Square Root: 250.6092576103285

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

Sum of digits of n-th term in Look and Say sequence A005150. A4977

a(n) = 4·a(n-1) + 1, a(1) = 15. A72201

Numbers n for which one step of the Collatz iteration (3n+1)/2^r gives rise to values 59,53,47,41,35,29,23,17,11 and 5 for r=1,3,5,..,19. A72253

An array A of the positive odd numbers, read by antidiagonals upwards, giving the present triangle T. A347834

Array T(n,k) of odd Collatz preimages read by antidiagonals. A178415

a(n) = ∑_i=1..n i·n^n-i. A62805

Rectangular array with all start numbers Mo(n, k), k >= 1, for the Collatz operation ud^2·n-1, n >= 1, ending in an odd number, read by antidiagonals. A238476

Array read by antidiagonals. Rows contain odd numbers reaching same odd successor in Collatz function iteration. A99730