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68670628404 = 22372591979437
BaseRepresentation
bin111111111101000101…
…101010001000110100
320120020202220100212120
4333331011222020310
52111114140102104
651314041515540
74650502465500
oct777505521064
9216222810776
1068670628404
1127139863564
12113857a2bb0
136624bc7741
14347624b300
151bbda6ccd9
hexffd16a234

68670628404 has 72 divisors (see below), whose sum is σ = 189550982880. Its totient is φ = 19287624384.

The previous prime is 68670628363. The next prime is 68670628409. The reversal of 68670628404 is 40482607686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68670628409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 955027 + ... + 1024410.

It is an arithmetic number, because the mean of its divisors is an integer number (2632652540).

Almost surely, 268670628404 is an apocalyptic number.

It is an amenable number.

68670628404 is an abundant number, since it is smaller than the sum of its proper divisors (120880354476).

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

68670628404 is a wasteful number, since it uses less digits than its factorization.

68670628404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979517 (or 1979508 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 68670628404 in words is "sixty-eight billion, six hundred seventy million, six hundred twenty-eight thousand, four hundred four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 59 84 98 118 147 177 196 236 294 354 413 588 708 826 1239 1652 2478 2891 4956 5782 8673 11564 17346 34692 1979437 3958874 5938311 7917748 11876622 13856059 23753244 27712118 41568177 55424236 83136354 96992413 116786783 166272708 193984826 233573566 290977239 350360349 387969652 467147132 581954478 700720698 817507481 1163908956 1401441396 1635014962 2452522443 3270029924 4905044886 5722552367 9810089772 11445104734 17167657101 22890209468 34335314202 68670628404