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68703630786 = 23372231128917
BaseRepresentation
bin111111111111000011…
…100011010111000010
320120100002000001122000
4333333003203113002
52111201112141121
651321221124430
74651353140400
oct777703432702
9216302001560
1068703630786
112715645475a
1211394859716
13662b9b118b
14347a79c470
151bc18db526
hexfff0e35c2

68703630786 has 96 divisors (see below), whose sum is σ = 185323178880. Its totient is φ = 18776130912.

The previous prime is 68703630781. The next prime is 68703630797.

68703630786 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (68703630781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 503601 + ... + 625316.

It is an arithmetic number, because the mean of its divisors is an integer number (1930449780).

Almost surely, 268703630786 is an apocalyptic number.

68703630786 is an abundant number, since it is smaller than the sum of its proper divisors (116619548094).

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

68703630786 is a wasteful number, since it uses less digits than its factorization.

68703630786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128965 (or 1128952 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 68703630786 in words is "sixty-eight billion, seven hundred three million, six hundred thirty thousand, seven hundred eighty-six".

Divisors: 1 2 3 6 7 9 14 18 21 23 27 42 46 49 54 63 69 98 126 138 147 161 189 207 294 322 378 414 441 483 621 882 966 1127 1242 1323 1449 2254 2646 2898 3381 4347 6762 8694 10143 20286 30429 60858 1128917 2257834 3386751 6773502 7902419 10160253 15804838 20320506 23707257 25965091 30480759 47414514 51930182 55316933 60961518 71121771 77895273 110633866 142243542 155790546 165950799 181755637 213365313 233685819 331901598 363511274 426730626 467371638 497852397 545266911 701057457 995704794 1090533822 1272289459 1402114914 1493557191 1635800733 2544578918 2987114382 3271601466 3816868377 4907402199 7633736754 9814804398 11450605131 22901210262 34351815393 68703630786