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68298769 = 7111495953
BaseRepresentation
bin1000001001000…
…10100000010001
311202111221022001
410010202200101
5114441030034
610435514001
71456346530
oct404424021
9152457261
1068298769
1135609970
121aa58901
13111c4396
1490dc317
155ee1a14
hex4122811

68298769 has 16 divisors (see below), whose sum is σ = 85737600. Its totient is φ = 52853760.

The previous prime is 68298761. The next prime is 68298803. The reversal of 68298769 is 96789286.

It is a cyclic number.

It is not a de Polignac number, because 68298769 - 23 = 68298761 is a prime.

It is a super-2 number, since 2×682987692 = 9329443693830722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68298761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8497 + ... + 14449.

It is an arithmetic number, because the mean of its divisors is an integer number (5358600).

Almost surely, 268298769 is an apocalyptic number.

It is an amenable number.

68298769 is a deficient number, since it is larger than the sum of its proper divisors (17438831).

68298769 is a wasteful number, since it uses less digits than its factorization.

68298769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120.

The product of its digits is 2612736, while the sum is 55.

The square root of 68298769 is about 8264.3069279886. The cubic root of 68298769 is about 408.7624172395.

The spelling of 68298769 in words is "sixty-eight million, two hundred ninety-eight thousand, seven hundred sixty-nine".

Divisors: 1 7 11 77 149 1043 1639 5953 11473 41671 65483 458381 886997 6208979 9756967 68298769