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68788533 = 3112084501
BaseRepresentation
bin1000001100110…
…10000100110101
311210102211010110
410012122010311
5120102213113
610454213233
71463456442
oct406320465
9153384113
1068788533
1135913930
121b054219
1311336298
1491c89c9
15608bbc3
hex419a135

68788533 has 8 divisors (see below), whose sum is σ = 100056096. Its totient is φ = 41690000.

The previous prime is 68788523. The next prime is 68788537. The reversal of 68788533 is 33588786.

It is a happy number.

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

It is not a de Polignac number, because 68788533 - 25 = 68788501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68788537) 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 7 ways as a sum of consecutive naturals, for example, 1042218 + ... + 1042283.

It is an arithmetic number, because the mean of its divisors is an integer number (12507012).

Almost surely, 268788533 is an apocalyptic number.

It is an amenable number.

68788533 is a deficient number, since it is larger than the sum of its proper divisors (31267563).

68788533 is a wasteful number, since it uses less digits than its factorization.

68788533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084515.

The product of its digits is 967680, while the sum is 48.

The square root of 68788533 is about 8293.8852777212. The cubic root of 68788533 is about 409.7371565369.

The spelling of 68788533 in words is "sixty-eight million, seven hundred eighty-eight thousand, five hundred thirty-three".

Divisors: 1 3 11 33 2084501 6253503 22929511 68788533