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68687026683 = 3118812362571
BaseRepresentation
bin111111111110000100…
…001101100111111011
320120021220202111002020
4333332010031213323
52111132334323213
651315425205523
74651062044052
oct777604154773
9216256674066
1068687026683
1127148043860
121138b1908a3
136628419672
1434784b9399
151bc020b923
hexffe10d9fb

68687026683 has 16 divisors (see below), whose sum is σ = 100021848192. Its totient is φ = 41581232000.

The previous prime is 68687026679. The next prime is 68687026717. The reversal of 68687026683 is 38662078686.

It is not a de Polignac number, because 68687026683 - 22 = 68687026679 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68687026643) 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, 1152213 + ... + 1210358.

It is an arithmetic number, because the mean of its divisors is an integer number (6251365512).

Almost surely, 268687026683 is an apocalyptic number.

68687026683 is a deficient number, since it is larger than the sum of its proper divisors (31334821509).

68687026683 is a wasteful number, since it uses less digits than its factorization.

68687026683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363466.

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 68687026683 in words is "sixty-eight billion, six hundred eighty-seven million, twenty-six thousand, six hundred eighty-three".

Divisors: 1 3 11 33 881 2643 9691 29073 2362571 7087713 25988281 77964843 2081425051 6244275153 22895675561 68687026683