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68030755 = 5131046627
BaseRepresentation
bin1000000111000…
…01000100100011
311202000022122121
410003201010203
5114403441010
610430045111
71454152252
oct403410443
9152008577
1068030755
1135446571
121a949797
131112c3b0
14906c799
155e8c3da
hex40e1123

68030755 has 8 divisors (see below), whose sum is σ = 87916752. Its totient is φ = 50238048.

The previous prime is 68030731. The next prime is 68030759. The reversal of 68030755 is 55703086.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68030755 - 223 = 59642147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68030755.

It is not an unprimeable number, because it can be changed into a prime (68030759) 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, 523249 + ... + 523378.

It is an arithmetic number, because the mean of its divisors is an integer number (10989594).

Almost surely, 268030755 is an apocalyptic number.

68030755 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68030755 is a deficient number, since it is larger than the sum of its proper divisors (19885997).

68030755 is a wasteful number, since it uses less digits than its factorization.

68030755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046645.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 68030755 is about 8248.0758362178. The cubic root of 68030755 is about 408.2270358694.

The spelling of 68030755 in words is "sixty-eight million, thirty thousand, seven hundred fifty-five".

Divisors: 1 5 13 65 1046627 5233135 13606151 68030755