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68000761 is a prime number
BaseRepresentation
bin1000000110110…
…01101111111001
311201221210111201
410003121233321
5114402011021
610425254201
71453665643
oct403315771
9151853451
1068000761
1135425a84
121a934361
131111b84a
149061893
155e83591
hex40d9bf9

68000761 has 2 divisors, whose sum is σ = 68000762. Its totient is φ = 68000760.

The previous prime is 68000729. The next prime is 68000771. The reversal of 68000761 is 16700086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67980025 + 20736 = 8245^2 + 144^2 .

It is a cyclic number.

It is not a de Polignac number, because 68000761 - 25 = 68000729 is a prime.

It is not a weakly prime, because it can be changed into another prime (68000771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34000380 + 34000381.

It is an arithmetic number, because the mean of its divisors is an integer number (34000381).

Almost surely, 268000761 is an apocalyptic number.

It is an amenable number.

68000761 is a deficient number, since it is larger than the sum of its proper divisors (1).

68000761 is an equidigital number, since it uses as much as digits as its factorization.

68000761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 68000761 is about 8246.2573935089. The cubic root of 68000761 is about 408.1670328035.

The spelling of 68000761 in words is "sixty-eight million, seven hundred sixty-one", and thus it is an aban number.