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68073265 = 5131047281
BaseRepresentation
bin1000000111010…
…11011100110001
311202002110222001
410003223130301
5114411321030
610431014001
71454420221
oct403533461
9152073861
1068073265
11354754a7
121a96a301
1311145850
149080081
155e99cca
hex40eb731

68073265 has 8 divisors (see below), whose sum is σ = 87971688. Its totient is φ = 50269440.

The previous prime is 68073211. The next prime is 68073281. The reversal of 68073265 is 56237086.

It can be written as a sum of positive squares in 4 ways, for example, as 685584 + 67387681 = 828^2 + 8209^2 .

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

It is not a de Polignac number, because 68073265 - 225 = 34518833 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 523576 + ... + 523705.

It is an arithmetic number, because the mean of its divisors is an integer number (10996461).

Almost surely, 268073265 is an apocalyptic number.

68073265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68073265 is a deficient number, since it is larger than the sum of its proper divisors (19898423).

68073265 is a wasteful number, since it uses less digits than its factorization.

68073265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047299.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 68073265 is about 8250.6523984470. The cubic root of 68073265 is about 408.3120470185.

The spelling of 68073265 in words is "sixty-eight million, seventy-three thousand, two hundred sixty-five".

Divisors: 1 5 13 65 1047281 5236405 13614653 68073265