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68800668 = 22347199613
BaseRepresentation
bin1000001100111…
…01000010011100
311210110102202220
410012131002130
5120103110133
610454345340
71463540016
oct406350234
9153412686
1068800668
1135921a62
121b05b250
131133b971
1491cd1b6
1560905b3
hex419d09c

68800668 has 48 divisors (see below), whose sum is σ = 165043200. Its totient is φ = 22296384.

The previous prime is 68800643. The next prime is 68800681. The reversal of 68800668 is 86600886.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111930 + ... + 112542.

It is an arithmetic number, because the mean of its divisors is an integer number (3438400).

Almost surely, 268800668 is an apocalyptic number.

It is an amenable number.

68800668 is an abundant number, since it is smaller than the sum of its proper divisors (96242532).

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

68800668 is a wasteful number, since it uses less digits than its factorization.

68800668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 68800668 is about 8294.6168085090. The cubic root of 68800668 is about 409.7612490604.

The spelling of 68800668 in words is "sixty-eight million, eight hundred thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 12 47 94 141 188 199 282 398 564 597 613 796 1194 1226 1839 2388 2452 3678 7356 9353 18706 28059 28811 37412 56118 57622 86433 112236 115244 121987 172866 243974 345732 365961 487948 731922 1463844 5733389 11466778 17200167 22933556 34400334 68800668