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68410385 = 587715601
BaseRepresentation
bin1000001001111…
…01110000010001
311202201121101222
410010331300101
5120003113020
610442134425
71460323121
oct404756021
9152647358
1068410385
113568580a
121aab1415
1311233124
14912ac81
156014b25
hex413dc11

68410385 has 8 divisors (see below), whose sum is σ = 82191336. Its totient is φ = 54662400.

The previous prime is 68410369. The next prime is 68410403. The reversal of 68410385 is 58301486.

It can be written as a sum of positive squares in 4 ways, for example, as 34023889 + 34386496 = 5833^2 + 5864^2 .

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

It is not a de Polignac number, because 68410385 - 24 = 68410369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3416 + ... + 12185.

It is an arithmetic number, because the mean of its divisors is an integer number (10273917).

Almost surely, 268410385 is an apocalyptic number.

It is an amenable number.

68410385 is a deficient number, since it is larger than the sum of its proper divisors (13780951).

68410385 is a wasteful number, since it uses less digits than its factorization.

68410385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16483.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 68410385 is about 8271.0570666632. The cubic root of 68410385 is about 408.9849668576.

The spelling of 68410385 in words is "sixty-eight million, four hundred ten thousand, three hundred eighty-five".

Divisors: 1 5 877 4385 15601 78005 13682077 68410385