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68201009 = 229431691
BaseRepresentation
bin1000001000010…
…10101000110001
311202022222012022
410010022220301
5114424413014
610433441225
71455461522
oct404125061
9152288168
1068201009
1135552478
121aa10215
131118ba36
1490b4849
155ec2a8e
hex410aa31

68201009 has 8 divisors (see below), whose sum is σ = 68757120. Its totient is φ = 67647600.

The previous prime is 68200987. The next prime is 68201033. The reversal of 68201009 is 90010286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68201009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68201039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98354 + ... + 99044.

It is an arithmetic number, because the mean of its divisors is an integer number (8594640).

Almost surely, 268201009 is an apocalyptic number.

It is an amenable number.

68201009 is a deficient number, since it is larger than the sum of its proper divisors (556111).

68201009 is a wasteful number, since it uses less digits than its factorization.

68201009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 68201009 is about 8258.3902184385. The cubic root of 68201009 is about 408.5672956404.

The spelling of 68201009 in words is "sixty-eight million, two hundred one thousand, nine".

Divisors: 1 229 431 691 98699 158239 297821 68201009