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68275806 = 2391112491
BaseRepresentation
bin1000001000111…
…00111001011110
311202110202210120
410010130321132
5114434311211
610435215410
71456222554
oct404347136
9152422716
1068275806
11355a3695
121aa47566
13111b6ab1
1490d3bd4
155ed9d06
hex411ce5e

68275806 has 16 divisors (see below), whose sum is σ = 136712448. Its totient is φ = 22731800.

The previous prime is 68275793. The next prime is 68275811. The reversal of 68275806 is 60857286.

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 7 ways as a sum of consecutive naturals, for example, 780 + ... + 11711.

It is an arithmetic number, because the mean of its divisors is an integer number (8544528).

Almost surely, 268275806 is an apocalyptic number.

68275806 is an abundant number, since it is smaller than the sum of its proper divisors (68436642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68275806 is a wasteful number, since it uses less digits than its factorization.

68275806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13407.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 68275806 is about 8262.9175234901. The cubic root of 68275806 is about 408.7166015600.

The spelling of 68275806 in words is "sixty-eight million, two hundred seventy-five thousand, eight hundred six".

Divisors: 1 2 3 6 911 1822 2733 5466 12491 24982 37473 74946 11379301 22758602 34137903 68275806