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68299355 = 531440641
BaseRepresentation
bin1000001001000…
…10101001011011
311202111222002202
410010202221123
5114441034410
610435520415
71456351325
oct404425133
9152458082
1068299355
113560a353
121aa5910b
13111c4727
1490dc615
155ee1ca5
hex4122a5b

68299355 has 8 divisors (see below), whose sum is σ = 84603264. Its totient is φ = 52876800.

The previous prime is 68299333. The next prime is 68299367. The reversal of 68299355 is 55399286.

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

It is not a de Polignac number, because 68299355 - 212 = 68295259 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220166 + ... + 220475.

It is an arithmetic number, because the mean of its divisors is an integer number (10575408).

Almost surely, 268299355 is an apocalyptic number.

68299355 is a deficient number, since it is larger than the sum of its proper divisors (16303909).

68299355 is a wasteful number, since it uses less digits than its factorization.

68299355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440677.

The product of its digits is 583200, while the sum is 47.

The square root of 68299355 is about 8264.3423815812. The cubic root of 68299355 is about 408.7635862898.

The spelling of 68299355 in words is "sixty-eight million, two hundred ninety-nine thousand, three hundred fifty-five".

Divisors: 1 5 31 155 440641 2203205 13659871 68299355