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68530365 = 3251522897
BaseRepresentation
bin1000001010110…
…11000010111101
311202221200222200
410011123002331
5120020432430
610444502113
71461332661
oct405330275
9152850880
1068530365
1135757972
121ab4a939
1311275917
14915c8a1
15603a460
hex415b0bd

68530365 has 12 divisors (see below), whose sum is σ = 118786044. Its totient is φ = 36549504.

The previous prime is 68530351. The next prime is 68530373. The reversal of 68530365 is 56303586.

68530365 is a `hidden beast` number, since 68 + 530 + 3 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26811684 + 41718681 = 5178^2 + 6459^2 .

It is not a de Polignac number, because 68530365 - 27 = 68530237 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 761404 + ... + 761493.

It is an arithmetic number, because the mean of its divisors is an integer number (9898837).

Almost surely, 268530365 is an apocalyptic number.

It is an amenable number.

68530365 is a deficient number, since it is larger than the sum of its proper divisors (50255679).

68530365 is a wasteful number, since it uses less digits than its factorization.

68530365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522908 (or 1522905 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 68530365 is about 8278.3068921127. The cubic root of 68530365 is about 409.2239235475.

The spelling of 68530365 in words is "sixty-eight million, five hundred thirty thousand, three hundred sixty-five".

Divisors: 1 3 5 9 15 45 1522897 4568691 7614485 13706073 22843455 68530365