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680008687775 = 52175915463529
BaseRepresentation
bin10011110010100111010…
…11010010000010011111
32102000012222022111212122
421321103223102002133
542120124211002100
61240220334053155
7100062151322264
oct11712353220237
92360188274778
10680008687775
112424321a395a
12ab95964a1bb
134c180814801
1424cac24126b
1512a4dea5985
hex9e53ad209f

680008687775 has 12 divisors (see below), whose sum is σ = 843690196800. Its totient is φ = 543697644480.

The previous prime is 680008687759. The next prime is 680008687777. The reversal of 680008687775 is 577786800086.

It is not a de Polignac number, because 680008687775 - 24 = 680008687759 is a prime.

It is a super-3 number, since 3×6800086877753 (a number of 36 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680008687777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7687790 + ... + 7775739.

It is an arithmetic number, because the mean of its divisors is an integer number (70307516400).

Almost surely, 2680008687775 is an apocalyptic number.

680008687775 is a deficient number, since it is larger than the sum of its proper divisors (163681509025).

680008687775 is a wasteful number, since it uses less digits than its factorization.

680008687775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15465298 (or 15465293 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 62.

The spelling of 680008687775 in words is "six hundred eighty billion, eight million, six hundred eighty-seven thousand, seven hundred seventy-five".

Divisors: 1 5 25 1759 8795 43975 15463529 77317645 386588225 27200347511 136001737555 680008687775