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68834417 = 137502441
BaseRepresentation
bin1000001101001…
…01010001110001
311210112011001212
410012211101301
5120110200132
610455205505
71464040301
oct406452161
9153464055
1068834417
1135945353
121b076895
1311351132
1491db601
15609a5b2
hex41a5471

68834417 has 4 divisors (see below), whose sum is σ = 69336996. Its totient is φ = 68331840.

The previous prime is 68834387. The next prime is 68834419. The reversal of 68834417 is 71443886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21169201 + 47665216 = 4601^2 + 6904^2 .

It is a cyclic number.

It is not a de Polignac number, because 68834417 - 214 = 68818033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68834419) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 251084 + ... + 251357.

It is an arithmetic number, because the mean of its divisors is an integer number (17334249).

Almost surely, 268834417 is an apocalyptic number.

It is an amenable number.

68834417 is a deficient number, since it is larger than the sum of its proper divisors (502579).

68834417 is a wasteful number, since it uses less digits than its factorization.

68834417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502578.

The product of its digits is 129024, while the sum is 41.

The square root of 68834417 is about 8296.6509508355. The cubic root of 68834417 is about 409.8282385834.

The spelling of 68834417 in words is "sixty-eight million, eight hundred thirty-four thousand, four hundred seventeen".

Divisors: 1 137 502441 68834417