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68207355 = 3251515719
BaseRepresentation
bin1000001000011…
…00001011111011
311202100021220100
410010030023323
5114430113410
610433530443
71455516156
oct404141373
9152307810
1068207355
1135557217
121aa13a23
13111918a8
1490b6c9d
155ec48c0
hex410c2fb

68207355 has 12 divisors (see below), whose sum is σ = 118226160. Its totient is φ = 36377232.

The previous prime is 68207353. The next prime is 68207369. The reversal of 68207355 is 55370286.

It is not a de Polignac number, because 68207355 - 21 = 68207353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68207353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 757815 + ... + 757904.

It is an arithmetic number, because the mean of its divisors is an integer number (9852180).

Almost surely, 268207355 is an apocalyptic number.

68207355 is a deficient number, since it is larger than the sum of its proper divisors (50018805).

68207355 is a wasteful number, since it uses less digits than its factorization.

68207355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515730 (or 1515727 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 68207355 is about 8258.7744248163. The cubic root of 68207355 is about 408.5799674355.

The spelling of 68207355 in words is "sixty-eight million, two hundred seven thousand, three hundred fifty-five".

Divisors: 1 3 5 9 15 45 1515719 4547157 7578595 13641471 22735785 68207355