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68641125 = 353779331
BaseRepresentation
bin1000001011101…
…10000101100101
311210011022220220
410011312011211
5120033004000
610451114553
71462303620
oct405660545
9153138826
1068641125
1135823103
121aba2a59
13112b4167
14918adb7
15605d1a0
hex4176165

68641125 has 64 divisors (see below), whose sum is σ = 132587520. Its totient is φ = 30888000.

The previous prime is 68641123. The next prime is 68641141. The reversal of 68641125 is 52114686.

It is not a de Polignac number, because 68641125 - 21 = 68641123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68641123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 207210 + ... + 207540.

It is an arithmetic number, because the mean of its divisors is an integer number (2071680).

Almost surely, 268641125 is an apocalyptic number.

It is an amenable number.

68641125 is a deficient number, since it is larger than the sum of its proper divisors (63946395).

68641125 is a wasteful number, since it uses less digits than its factorization.

68641125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 425 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 68641125 is about 8284.9939649948. The cubic root of 68641125 is about 409.4442698858. Note that the first 3 decimals are identical.

The spelling of 68641125 in words is "sixty-eight million, six hundred forty-one thousand, one hundred twenty-five".

Divisors: 1 3 5 7 15 21 25 35 75 79 105 125 175 237 331 375 395 525 553 875 993 1185 1655 1659 1975 2317 2625 2765 4965 5925 6951 8275 8295 9875 11585 13825 24825 26149 29625 34755 41375 41475 57925 69125 78447 124125 130745 173775 183043 207375 289625 392235 549129 653725 868875 915215 1961175 2745645 3268625 4576075 9805875 13728225 22880375 68641125