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6699420 = 22325713409
BaseRepresentation
bin11001100011100110011100
3110121100212200
4121203212130
53203340140
6355331500
7110641560
oct31434634
913540780
106699420
113866412
1222b0b90
131507470
14c656a0
158c5030
hex66399c

6699420 has 144 divisors (see below), whose sum is σ = 25072320. Its totient is φ = 1410048.

The previous prime is 6699401. The next prime is 6699421. The reversal of 6699420 is 249966.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6699421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16176 + ... + 16584.

Almost surely, 26699420 is an apocalyptic number.

6699420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6699420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12536160).

6699420 is an abundant number, since it is smaller than the sum of its proper divisors (18372900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6699420 is a wasteful number, since it uses less digits than its factorization.

6699420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 6699420 is about 2588.3237819098. The cubic root of 6699420 is about 188.5149230540.

The spelling of 6699420 in words is "six million, six hundred ninety-nine thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 7 9 10 12 13 14 15 18 20 21 26 28 30 35 36 39 42 45 52 60 63 65 70 78 84 90 91 105 117 126 130 140 156 180 182 195 210 234 252 260 273 315 364 390 409 420 455 468 546 585 630 780 818 819 910 1092 1170 1227 1260 1365 1636 1638 1820 2045 2340 2454 2730 2863 3276 3681 4090 4095 4908 5317 5460 5726 6135 7362 8180 8190 8589 10634 11452 12270 14315 14724 15951 16380 17178 18405 21268 24540 25767 26585 28630 31902 34356 36810 37219 42945 47853 51534 53170 57260 63804 73620 74438 79755 85890 95706 103068 106340 111657 128835 148876 159510 171780 186095 191412 223314 239265 257670 319020 334971 372190 446628 478530 515340 558285 669942 744380 957060 1116570 1339884 1674855 2233140 3349710 6699420