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68883073 = 723973541
BaseRepresentation
bin1000001101100…
…01001010000001
311210121121210221
410012301022001
5120113224243
610500223041
71464332200
oct406611201
9153547727
1068883073
1135978966
121b09aa81
131136a31c
149211237
1560a9bed
hex41b1281

68883073 has 12 divisors (see below), whose sum is σ = 80353812. Its totient is φ = 58877280.

The previous prime is 68883071. The next prime is 68883077. The reversal of 68883073 is 37038886.

It can be written as a sum of positive squares in 2 ways, for example, as 37601424 + 31281649 = 6132^2 + 5593^2 .

It is not a de Polignac number, because 68883073 - 21 = 68883071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68883071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17683 + ... + 21223.

It is an arithmetic number, because the mean of its divisors is an integer number (6696151).

Almost surely, 268883073 is an apocalyptic number.

It is an amenable number.

68883073 is a deficient number, since it is larger than the sum of its proper divisors (11470739).

68883073 is a wasteful number, since it uses less digits than its factorization.

68883073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3952 (or 3945 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 68883073 is about 8299.5827003531. The cubic root of 68883073 is about 409.9247789824.

The spelling of 68883073 in words is "sixty-eight million, eight hundred eighty-three thousand, seventy-three".

Divisors: 1 7 49 397 2779 3541 19453 24787 173509 1405777 9840439 68883073