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68132741 is a prime number
BaseRepresentation
bin1000000111110…
…01111110000101
311202012111112212
410003321332011
5114420221431
610432153205
71455055505
oct403717605
9152174485
1068132741
1135506156
121a998805
1311166941
149097a05
155eac72b
hex40f9f85

68132741 has 2 divisors, whose sum is σ = 68132742. Its totient is φ = 68132740.

The previous prime is 68132717. The next prime is 68132747. The reversal of 68132741 is 14723186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68128516 + 4225 = 8254^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 68132741 - 26 = 68132677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68132698 and 68132707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68132747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34066370 + 34066371.

It is an arithmetic number, because the mean of its divisors is an integer number (34066371).

Almost surely, 268132741 is an apocalyptic number.

It is an amenable number.

68132741 is a deficient number, since it is larger than the sum of its proper divisors (1).

68132741 is an equidigital number, since it uses as much as digits as its factorization.

68132741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 68132741 is about 8254.2559325478. The cubic root of 68132741 is about 408.4309272581.

The spelling of 68132741 in words is "sixty-eight million, one hundred thirty-two thousand, seven hundred forty-one".