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6866960660 = 2257311997951
BaseRepresentation
bin1100110010100110…
…11000000100010100
3122201120101202010022
412121103120010110
5103030420220120
63053222444312
7332112126320
oct63123300424
918646352108
106866960660
112a042471aa
1213b7893698
13855894c41
14492008980
152a2cda025
hex1994d8114

6866960660 has 96 divisors (see below), whose sum is σ = 17099980800. Its totient is φ = 2266704000.

The previous prime is 6866960641. The next prime is 6866960669. The reversal of 6866960660 is 660696686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866960669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859685 + ... + 867635.

It is an arithmetic number, because the mean of its divisors is an integer number (178124800).

Almost surely, 26866960660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6866960660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8549990400).

6866960660 is an abundant number, since it is smaller than the sum of its proper divisors (10233020140).

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

6866960660 is a wasteful number, since it uses less digits than its factorization.

6866960660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8197 (or 8195 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 53.

The square root of 6866960660 is about 82867.1265339881. The cubic root of 6866960660 is about 1900.7347721357.

The spelling of 6866960660 in words is "six billion, eight hundred sixty-six million, nine hundred sixty thousand, six hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 31 35 62 70 124 140 155 199 217 310 398 434 620 796 868 995 1085 1393 1990 2170 2786 3980 4340 5572 6169 6965 7951 12338 13930 15902 24676 27860 30845 31804 39755 43183 55657 61690 79510 86366 111314 123380 159020 172732 215915 222628 246481 278285 431830 492962 556570 863660 985924 1113140 1232405 1582249 1725367 2464810 3164498 3450734 4929620 6328996 6901468 7911245 8626835 11075743 15822490 17253670 22151486 31644980 34507340 44302972 49049719 55378715 98099438 110757430 196198876 221514860 245248595 343348033 490497190 686696066 980994380 1373392132 1716740165 3433480330 6866960660