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68350369 = 359190391
BaseRepresentation
bin1000001001011…
…11000110100001
311202121120002011
410010233012201
5114444202434
610440552521
71456653133
oct404570641
9152546064
1068350369
113564470a
121aa82741
1311211a09
149113053
156001e64
hex412f1a1

68350369 has 4 divisors (see below), whose sum is σ = 68541120. Its totient is φ = 68159620.

The previous prime is 68350363. The next prime is 68350393. The reversal of 68350369 is 96305386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68350369 - 27 = 68350241 is a prime.

It is a super-2 number, since 2×683503692 = 9343545884872322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68350363) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 94837 + ... + 95554.

It is an arithmetic number, because the mean of its divisors is an integer number (17135280).

Almost surely, 268350369 is an apocalyptic number.

It is an amenable number.

68350369 is a deficient number, since it is larger than the sum of its proper divisors (190751).

68350369 is a wasteful number, since it uses less digits than its factorization.

68350369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190750.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 68350369 is about 8267.4281974505. The cubic root of 68350369 is about 408.8653318870.

The spelling of 68350369 in words is "sixty-eight million, three hundred fifty thousand, three hundred sixty-nine".

Divisors: 1 359 190391 68350369