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68019706 = 2109509613
BaseRepresentation
bin1000000110111…
…10010111111010
311201222202111101
410003132113322
5114403112311
610425522014
71454105116
oct403362772
9151882441
1068019706
1135439237
121a94330a
1311127361
149068746
155e88ec1
hex40de5fa

68019706 has 16 divisors (see below), whose sum is σ = 103336200. Its totient is φ = 33576768.

The previous prime is 68019701. The next prime is 68019713. The reversal of 68019706 is 60791086.

It can be written as a sum of positive squares in 4 ways, for example, as 53158681 + 14861025 = 7291^2 + 3855^2 .

It is not an unprimeable number, because it can be changed into a prime (68019701) 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, 110656 + ... + 111268.

Almost surely, 268019706 is an apocalyptic number.

68019706 is a deficient number, since it is larger than the sum of its proper divisors (35316494).

68019706 is a wasteful number, since it uses less digits than its factorization.

68019706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 68019706 is about 8247.4060164394. The cubic root of 68019706 is about 408.2049343716.

The spelling of 68019706 in words is "sixty-eight million, nineteen thousand, seven hundred six".

Divisors: 1 2 109 218 509 613 1018 1226 55481 66817 110962 133634 312017 624034 34009853 68019706