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68710087 = 433594451
BaseRepresentation
bin1000001100001…
…10111011000111
311210021211112001
410012012323013
5120042210322
610452410131
71463011645
oct406067307
9153254461
1068710087
113586a9a6
121b016947
1311309674
1491a8195
156073827
hex4186ec7

68710087 has 8 divisors (see below), whose sum is σ = 70519680. Its totient is φ = 66910200.

The previous prime is 68710079. The next prime is 68710093. The reversal of 68710087 is 78001786.

It is a happy number.

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 68710087 - 23 = 68710079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68710027) 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, 13212 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (8814960).

Almost surely, 268710087 is an apocalyptic number.

68710087 is a deficient number, since it is larger than the sum of its proper divisors (1809593).

68710087 is a wasteful number, since it uses less digits than its factorization.

68710087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4853.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 68710087 is about 8289.1547820028. The cubic root of 68710087 is about 409.5813434209.

The spelling of 68710087 in words is "sixty-eight million, seven hundred ten thousand, eighty-seven".

Divisors: 1 43 359 4451 15437 191393 1597909 68710087