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68041837 = 174122381
BaseRepresentation
bin1000000111000…
…11110001101101
311202000212212001
410003203301231
5114404314322
610430212301
71454226463
oct403436155
9152025761
1068041837
1135453926
121a954091
1311134456
149072833
155e90827
hex40e3c6d

68041837 has 12 divisors (see below), whose sum is σ = 73875348. Its totient is φ = 62451200.

The previous prime is 68041819. The next prime is 68041847. The reversal of 68041837 is 73814086.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 34644996 + 33396841 = 5886^2 + 5779^2 .

It is not a de Polignac number, because 68041837 - 27 = 68041709 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 68041796 and 68041805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68041817) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 27387 + ... + 29767.

It is an arithmetic number, because the mean of its divisors is an integer number (6156279).

Almost surely, 268041837 is an apocalyptic number.

It is an amenable number.

68041837 is a deficient number, since it is larger than the sum of its proper divisors (5833511).

68041837 is a wasteful number, since it uses less digits than its factorization.

68041837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480 (or 2439 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 68041837 is about 8248.7476019090. The cubic root of 68041837 is about 408.2492009739.

The spelling of 68041837 in words is "sixty-eight million, forty-one thousand, eight hundred thirty-seven".

Divisors: 1 17 41 697 1681 2381 28577 40477 97621 1659557 4002461 68041837