Search a number
-
+
68061708 = 223411132113
BaseRepresentation
bin1000000111010…
…00101000001100
311202001220010000
410003220220030
5114410433313
610430444300
71454341431
oct403505014
9152056100
1068061708
1135467850
121a963690
1311140500
149079b88
155e96673
hex40e8a0c

68061708 has 180 divisors, whose sum is σ = 212041368. Its totient is φ = 18869760.

The previous prime is 68061701. The next prime is 68061731. The reversal of 68061708 is 80716086.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (68061701) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 602260 + ... + 602372.

Almost surely, 268061708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68061708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106020684).

68061708 is an abundant number, since it is smaller than the sum of its proper divisors (143979660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68061708 is a wasteful number, since it uses less digits than its factorization.

68061708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 68061708 is about 8249.9519998604. The cubic root of 68061708 is about 408.2889389285.

The spelling of 68061708 in words is "sixty-eight million, sixty-one thousand, seven hundred eight".