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68296745 = 5119531303
BaseRepresentation
bin1000001001000…
…10000000101001
311202111211112002
410010202000221
5114440443440
610435500345
71456340606
oct404420051
9152454462
1068296745
11356083a0
121aa576b5
13111c349a
1490db6ad
155ee1115
hex4122029

68296745 has 16 divisors (see below), whose sum is σ = 89569152. Its totient is φ = 49580160.

The previous prime is 68296741. The next prime is 68296763. The reversal of 68296745 is 54769286.

It is not a de Polignac number, because 68296745 - 22 = 68296741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68296745.

It is not an unprimeable number, because it can be changed into a prime (68296741) 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, 51764 + ... + 53066.

It is an arithmetic number, because the mean of its divisors is an integer number (5598072).

Almost surely, 268296745 is an apocalyptic number.

It is an amenable number.

68296745 is a deficient number, since it is larger than the sum of its proper divisors (21272407).

68296745 is a wasteful number, since it uses less digits than its factorization.

68296745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272.

The product of its digits is 725760, while the sum is 47.

The square root of 68296745 is about 8264.1844727716. The cubic root of 68296745 is about 408.7583793760.

The spelling of 68296745 in words is "sixty-eight million, two hundred ninety-six thousand, seven hundred forty-five".

Divisors: 1 5 11 55 953 1303 4765 6515 10483 14333 52415 71665 1241759 6208795 13659349 68296745