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68142627 = 347120181
BaseRepresentation
bin1000000111111…
…00011000100011
311202020000010000
410003330120203
5114421031002
610432311043
71455126360
oct403743043
9152200100
1068142627
1135512623
121a9a2483
131116b2a7
14909b467
155eb061c
hex40fc623

68142627 has 20 divisors (see below), whose sum is σ = 116336176. Its totient is φ = 38938320.

The previous prime is 68142611. The next prime is 68142631. The reversal of 68142627 is 72624186.

It is not a de Polignac number, because 68142627 - 24 = 68142611 is a prime.

It is a super-2 number, since 2×681426272 = 9286835228922258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68142591 and 68142600.

It is not an unprimeable number, because it can be changed into a prime (68142667) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59524 + ... + 60657.

Almost surely, 268142627 is an apocalyptic number.

68142627 is a deficient number, since it is larger than the sum of its proper divisors (48193549).

68142627 is a wasteful number, since it uses less digits than its factorization.

68142627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120200 (or 120191 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 68142627 is about 8254.8547534163. The cubic root of 68142627 is about 408.4506806239.

The spelling of 68142627 in words is "sixty-eight million, one hundred forty-two thousand, six hundred twenty-seven".

Divisors: 1 3 7 9 21 27 63 81 189 567 120181 360543 841267 1081629 2523801 3244887 7571403 9734661 22714209 68142627