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68102565 = 354540171
BaseRepresentation
bin1000000111100…
…10100110100101
311202010222011020
410003302212211
5114413240230
610431401353
71454601516
oct403624645
9152128136
1068102565
1135495513
121a983259
1311155c9b
14908aa0d
155ea3810
hex40f29a5

68102565 has 8 divisors (see below), whose sum is σ = 108964128. Its totient is φ = 36321360.

The previous prime is 68102549. The next prime is 68102569. The reversal of 68102565 is 56520186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68102565 - 24 = 68102549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68102569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2270071 + ... + 2270100.

It is an arithmetic number, because the mean of its divisors is an integer number (13620516).

Almost surely, 268102565 is an apocalyptic number.

It is an amenable number.

68102565 is a deficient number, since it is larger than the sum of its proper divisors (40861563).

68102565 is a wasteful number, since it uses less digits than its factorization.

68102565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540179.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 68102565 is about 8252.4278245859. The cubic root of 68102565 is about 408.3706203166.

The spelling of 68102565 in words is "sixty-eight million, one hundred two thousand, five hundred sixty-five".

Divisors: 1 3 5 15 4540171 13620513 22700855 68102565