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68770925 = 5216211697
BaseRepresentation
bin1000001100101…
…01110001101101
311210101220222022
410012111301231
5120101132200
610453555525
71463354216
oct406256155
9153356868
1068770925
1135901683
121b045ba5
131132b272
1491c240d
156086885
hex4195c6d

68770925 has 12 divisors (see below), whose sum is σ = 85378836. Its totient is φ = 54950400.

The previous prime is 68770913. The next prime is 68770957. The reversal of 68770925 is 52907786.

It can be written as a sum of positive squares in 6 ways, for example, as 5822569 + 62948356 = 2413^2 + 7934^2 .

It is not a de Polignac number, because 68770925 - 210 = 68769901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 39677 + ... + 41373.

It is an arithmetic number, because the mean of its divisors is an integer number (7114903).

Almost surely, 268770925 is an apocalyptic number.

It is an amenable number.

68770925 is a deficient number, since it is larger than the sum of its proper divisors (16607911).

68770925 is a wasteful number, since it uses less digits than its factorization.

68770925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328 (or 3323 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 68770925 is about 8292.8237048668. The cubic root of 68770925 is about 409.7021930179.

The spelling of 68770925 in words is "sixty-eight million, seven hundred seventy thousand, nine hundred twenty-five".

Divisors: 1 5 25 1621 1697 8105 8485 40525 42425 2750837 13754185 68770925