Properties of the number

Number length
Sum of digits
Multiplication of digits
of 643968 = 6439.68
Parity
Even
Is a prime number?
No
Next prime number
Is a composite number?
Yes
Is a semiprime number?
No
Is a linear number?
No
Is a square pyramidal number?
No
Triangular number
(T643968)Is an abundant number?
Yes
Is a Fibonacci number?
No
Is a Harshad number?
(Niven number)Yes
Count of divisors
Divisors
1 643968 2 321984 3 214656 4 160992 6 107328 8 80496 9 71552 12 53664 13 49536 16 40248 18 35776 24 26832 26 24768 32 20124 36 17888 39 16512 43 14976 48 13416 52 12384 64 10062 72 8944 78 8256 86 7488 96 6708 104 6192 117 5504 128 5031 129 4992 144 4472 156 4128 172 3744 192 3354 208 3096 234 2752 258 2496 288 2236 312 2064 344 1872 384 1677 387 1664 416 1548 468 1376 516 1248 559 1152 576 1118 624 1032 688 936 774 832
Sum of divisors
Factoring
(prime factors)27 × 32 × 13 × 43
Exponentiation
2 414694785024 3 267050171322335232 4 171971764726101574680576 5 110744313387138178843901165568 6 71315794003288598753749345788493824 7 45925089232709752362254458708724790853632 8 29574287863009633809216279265740086116431691776 9 19044895006566587864853388926200111776226283689607168 10 12264302947588672454153907160027233580312887455028948762624
2√ 802.47616787042 3√ 86.355120725045 4√ 28.328010305534 5√ 14.513523397474 6√ 9.2927455967031 7√ 6.7583044995231 8√ 5.3224064393405 9√ 4.4200722182846 10√ 3.8096618481795 3.3734833541101
Square root and remainder
8022 + 764
Is a perfect square?
No
Is a perfect cube?
No
Natural logarithm
(loge)13.375404314411
Common logarithm
(log10)5.8088642869736
Binary logarithm
(log2)19.296629474286