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6680768148 = 2232493737589
BaseRepresentation
bin1100011100011010…
…00110111010010100
3122020121001012000100
412032031012322110
5102140234040043
63022532014100
7324361410105
oct61615067224
918217035010
106680768148
112919134a9a
121365461330
13826133562
144753bc3ac
152917abcd3
hex18e346e94

6680768148 has 36 divisors (see below), whose sum is σ = 16891367220. Its totient is φ = 2226412416.

The previous prime is 6680768131. The next prime is 6680768167. The reversal of 6680768148 is 8418670866.

It can be written as a sum of positive squares in 2 ways, for example, as 3714658704 + 2966109444 = 60948^2 + 54462^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 6680768094 and 6680768103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158938 + ... + 196526.

It is an arithmetic number, because the mean of its divisors is an integer number (469204645).

Almost surely, 26680768148 is an apocalyptic number.

It is an amenable number.

6680768148 is an abundant number, since it is smaller than the sum of its proper divisors (10210599072).

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

6680768148 is a wasteful number, since it uses less digits than its factorization.

6680768148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42536 (or 42531 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 6680768148 is about 81735.9660614591. The cubic root of 6680768148 is about 1883.3981234261.

The spelling of 6680768148 in words is "six billion, six hundred eighty million, seven hundred sixty-eight thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 4937 9874 14811 19748 29622 37589 44433 59244 75178 88866 112767 150356 177732 225534 338301 451068 676602 1353204 185576893 371153786 556730679 742307572 1113461358 1670192037 2226922716 3340384074 6680768148