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680579954847 = 3213171573735843
BaseRepresentation
bin10011110011101011011…
…10011111100010011111
32102001200210020212222100
421321311232133202133
542122311432023342
61240353142220143
7100112256111042
oct11716556374237
92361623225870
10680579954847
112426a5707301
12aba98a24653
134c241c90070
1424d24068c59
1512a841e9e4c
hex9e75b9f89f

680579954847 has 96 divisors (see below), whose sum is σ = 1131313030848. Its totient is φ = 390554431488.

The previous prime is 680579954839. The next prime is 680579954849. The reversal of 680579954847 is 748459975086.

680579954847 is a `hidden beast` number, since 6 + 8 + 0 + 5 + 79 + 9 + 548 + 4 + 7 = 666.

It is not a de Polignac number, because 680579954847 - 23 = 680579954839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680579954849) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 116474908 + ... + 116480750.

It is an arithmetic number, because the mean of its divisors is an integer number (11784510738).

Almost surely, 2680579954847 is an apocalyptic number.

680579954847 is a deficient number, since it is larger than the sum of its proper divisors (450733076001).

680579954847 is a wasteful number, since it uses less digits than its factorization.

680579954847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6409 (or 6406 counting only the distinct ones).

The product of its (nonzero) digits is 609638400, while the sum is 72.

The spelling of 680579954847 in words is "six hundred eighty billion, five hundred seventy-nine million, nine hundred fifty-four thousand, eight hundred forty-seven".

Divisors: 1 3 9 13 17 39 51 117 153 157 221 373 471 663 1119 1413 1989 2041 2669 3357 4849 5843 6123 6341 8007 14547 17529 18369 19023 24021 34697 43641 52587 57069 58561 75959 82433 99331 104091 175683 227877 247299 297993 312273 527049 683631 741897 761293 893979 917351 995537 1291303 2179439 2283879 2752053 2986611 3873909 6538317 6851637 8256159 8959833 11621727 11925563 12941981 15594967 19614951 28332707 35776689 37050463 38825943 46784901 84998121 107330067 111151389 116477829 140354703 202734571 254994363 333454167 342171923 481656019 608203713 1026515769 1444968057 1824611139 3079547307 4334904171 4448234999 5816922691 13344704997 17450768073 40034114991 52352304219 75619994983 226859984949 680579954847