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68085185 = 572967079
BaseRepresentation
bin1000000111011…
…10010111000001
311202010002022112
410003232113001
5114412211220
610431145105
71454500040
oct403562701
9152102275
1068085185
1135483453
121a975195
131114b0bc
149084557
155e9d5c5
hex40ee5c1

68085185 has 16 divisors (see below), whose sum is σ = 96595200. Its totient is φ = 45076416.

The previous prime is 68085181. The next prime is 68085191. The reversal of 68085185 is 58158086.

It is not a de Polignac number, because 68085185 - 22 = 68085181 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68085181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32525 + ... + 34554.

It is an arithmetic number, because the mean of its divisors is an integer number (6037200).

Almost surely, 268085185 is an apocalyptic number.

It is an amenable number.

68085185 is a deficient number, since it is larger than the sum of its proper divisors (28510015).

68085185 is a wasteful number, since it uses less digits than its factorization.

68085185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67120.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 68085185 is about 8251.3747339459. The cubic root of 68085185 is about 408.3358781830.

The spelling of 68085185 in words is "sixty-eight million, eighty-five thousand, one hundred eighty-five".

Divisors: 1 5 7 29 35 145 203 1015 67079 335395 469553 1945291 2347765 9726455 13617037 68085185