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68106255 = 357648631
BaseRepresentation
bin1000000111100…
…11100000001111
311202011011012220
410003303200033
5114413400010
610431430423
71454615340
oct403634017
9152134186
1068106255
1135498268
121a985413
1311157879
14908c0c7
155ea4970
hex40f380f

68106255 has 16 divisors (see below), whose sum is σ = 124537344. Its totient is φ = 31134240.

The previous prime is 68106223. The next prime is 68106257. The reversal of 68106255 is 55260186.

It is not a de Polignac number, because 68106255 - 25 = 68106223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68106257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324211 + ... + 324420.

It is an arithmetic number, because the mean of its divisors is an integer number (7783584).

Almost surely, 268106255 is an apocalyptic number.

68106255 is a deficient number, since it is larger than the sum of its proper divisors (56431089).

68106255 is a wasteful number, since it uses less digits than its factorization.

68106255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648646.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 68106255 is about 8252.6513921285. The cubic root of 68106255 is about 408.3779957626.

The spelling of 68106255 in words is "sixty-eight million, one hundred six thousand, two hundred fifty-five".

Divisors: 1 3 5 7 15 21 35 105 648631 1945893 3243155 4540417 9729465 13621251 22702085 68106255