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68679859630 = 2597373189823
BaseRepresentation
bin111111111101101000…
…110111110110101110
320120021102021100201211
4333331220313312232
52111124021002010
651315011425034
74650644113624
oct777550676656
9216242240654
1068679859630
1127143a99078
12113888b517a
136626aaa3c5
143477571514
151bbe79308a
hexffda37dae

68679859630 has 32 divisors (see below), whose sum is σ = 125233726464. Its totient is φ = 27115693056.

The previous prime is 68679859627. The next prime is 68679859649. The reversal of 68679859630 is 3695897686.

It is a super-3 number, since 3×686798596303 (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266899 + ... + 456721.

It is an arithmetic number, because the mean of its divisors is an integer number (3913553952).

Almost surely, 268679859630 is an apocalyptic number.

68679859630 is a deficient number, since it is larger than the sum of its proper divisors (56553866834).

68679859630 is a wasteful number, since it uses less digits than its factorization.

68679859630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190300.

The product of its (nonzero) digits is 117573120, while the sum is 67.

The spelling of 68679859630 in words is "sixty-eight billion, six hundred seventy-nine million, eight hundred fifty-nine thousand, six hundred thirty".

Divisors: 1 2 5 10 97 194 373 485 746 970 1865 3730 36181 72362 180905 189823 361810 379646 949115 1898230 18412831 36825662 70803979 92064155 141607958 184128310 354019895 708039790 6867985963 13735971926 34339929815 68679859630