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68845825 = 528633191
BaseRepresentation
bin1000001101010…
…00000100000001
311210112201201101
410012220010001
5120111031300
610455334401
71464115456
oct406500401
9153481641
1068845825
1135952984
121b081401
1311356399
14920182d
15609db6a
hex41a8101

68845825 has 12 divisors (see below), whose sum is σ = 85494528. Its totient is φ = 54995600.

The previous prime is 68845793. The next prime is 68845837. The reversal of 68845825 is 52854886.

It is not a de Polignac number, because 68845825 - 25 = 68845793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19980 + ... + 23170.

It is an arithmetic number, because the mean of its divisors is an integer number (7124544).

Almost surely, 268845825 is an apocalyptic number.

It is an amenable number.

68845825 is a deficient number, since it is larger than the sum of its proper divisors (16648703).

68845825 is a wasteful number, since it uses less digits than its factorization.

68845825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064 (or 4059 counting only the distinct ones).

The product of its digits is 614400, while the sum is 46.

The square root of 68845825 is about 8297.3384286770. The cubic root of 68845825 is about 409.8508777538.

The spelling of 68845825 in words is "sixty-eight million, eight hundred forty-five thousand, eight hundred twenty-five".

Divisors: 1 5 25 863 3191 4315 15955 21575 79775 2753833 13769165 68845825