Properties of the Number 745

Seven Hundred Forty-Five

Basics

Value: 744 → 745 → 746

Parity: odd

Prime: No

Previous Prime: 743

Next Prime: 751

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 149

Divisors: 1, 5, 149, 745

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1011101001

Octal: 1351

Duodecimal: 521

Hexadecimal: 2e9

Square: 555025

Square Root: 27.294688127912362

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

Numbers whose sum of divisors is a square. A6532

Numbers obtained by reinterpreting base-2 representation of n in the factorial base: a(n) = ∑_k>=0 A030308(n,k)*A000142(k+1). A59590

Partial sums of A299274. A299275

Number of partitions p of n such that (number of even numbers in p) = (number of odd numbers in p). A241638

Numbers m such that the Bernoulli number B_2·m has denominator 66. A51229

Numbers of the form 2^j + 3^k, for j and k >= 0. A4050

Number of partitions of n for which the number of even parts is equal to the positive alternating sum of the parts. A277579

Numbers n such that the number of squarefree numbers between prime(n) and prime(n+1) = prime(n+1)-prime(n)-1. A68361

Hypotenuses for which there exist exactly 4 distinct integer triangles. A84648

Numbers whose sum of digits is 16. A235227