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68101747 = 722343627
BaseRepresentation
bin1000000111100…
…10011001110011
311202010221000221
410003302121303
5114413223442
610431353511
71454566240
oct403623163
9152127027
1068101747
113549493a
121a982897
13111557bc
14908a5c7
155ea3467
hex40f2673

68101747 has 8 divisors (see below), whose sum is σ = 78181376. Its totient is φ = 58109832.

The previous prime is 68101739. The next prime is 68101769. The reversal of 68101747 is 74710186.

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

It is a cyclic number.

It is not a de Polignac number, because 68101747 - 23 = 68101739 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68101147) 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 7 ways as a sum of consecutive naturals, for example, 20253 + ... + 23374.

It is an arithmetic number, because the mean of its divisors is an integer number (9772672).

Almost surely, 268101747 is an apocalyptic number.

68101747 is a deficient number, since it is larger than the sum of its proper divisors (10079629).

68101747 is a wasteful number, since it uses less digits than its factorization.

68101747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43857.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 68101747 is about 8252.3782632645. The cubic root of 68101747 is about 408.3689852901.

The spelling of 68101747 in words is "sixty-eight million, one hundred one thousand, seven hundred forty-seven".

Divisors: 1 7 223 1561 43627 305389 9728821 68101747