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68243275 = 5212172243
BaseRepresentation
bin1000001000101…
…00111101001011
311202102010011201
410010110331023
5114432241100
610434405031
71456025662
oct404247513
9152363151
1068243275
1135581201
121aa30777
13111a5049
1490c5dd9
155ed036a
hex4114f4b

68243275 has 12 divisors (see below), whose sum is σ = 84728952. Its totient is φ = 54525440.

The previous prime is 68243261. The next prime is 68243297. The reversal of 68243275 is 57234286.

It is not a de Polignac number, because 68243275 - 215 = 68210507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29304 + ... + 31546.

It is an arithmetic number, because the mean of its divisors is an integer number (7060746).

Almost surely, 268243275 is an apocalyptic number.

68243275 is a deficient number, since it is larger than the sum of its proper divisors (16485677).

68243275 is a wasteful number, since it uses less digits than its factorization.

68243275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470 (or 3465 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 68243275 is about 8260.9487953866. The cubic root of 68243275 is about 408.6516782595.

The spelling of 68243275 in words is "sixty-eight million, two hundred forty-three thousand, two hundred seventy-five".

Divisors: 1 5 25 1217 2243 6085 11215 30425 56075 2729731 13648655 68243275