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68608693 = 2937431487
BaseRepresentation
bin1000001011011…
…10001010110101
311210002200102201
410011232022311
5120030434233
610450304501
71462110226
oct405561265
9153080381
1068608693
11358007aa
121ab88131
13112a247a
14917d24d
15605377d
hex416e2b5

68608693 has 16 divisors (see below), whose sum is σ = 74638080. Its totient is φ = 62911296.

The previous prime is 68608691. The next prime is 68608711. The reversal of 68608693 is 39680686.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68608693 - 21 = 68608691 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 (68608691) 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 15 ways as a sum of consecutive naturals, for example, 45396 + ... + 46882.

It is an arithmetic number, because the mean of its divisors is an integer number (4664880).

Almost surely, 268608693 is an apocalyptic number.

It is an amenable number.

68608693 is a deficient number, since it is larger than the sum of its proper divisors (6029387).

68608693 is a wasteful number, since it uses less digits than its factorization.

68608693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 68608693 is about 8283.0364601395. The cubic root of 68608693 is about 409.3797741067.

The spelling of 68608693 in words is "sixty-eight million, six hundred eight thousand, six hundred ninety-three".

Divisors: 1 29 37 43 1073 1247 1487 1591 43123 46139 55019 63941 1595551 1854289 2365817 68608693