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68804613 = 332548319
BaseRepresentation
bin1000001100111…
…10000000000101
311210110122012000
410012132000011
5120103221423
610454415513
71463554353
oct406360005
9153418160
1068804613
1135924a19
121b061599
13113406b7
1491d07d3
156091843
hex419e005

68804613 has 8 divisors (see below), whose sum is σ = 101932800. Its totient is φ = 45869724.

The previous prime is 68804597. The next prime is 68804621. The reversal of 68804613 is 31640886.

It is a happy number.

It is not a de Polignac number, because 68804613 - 24 = 68804597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68804623) 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, 1274133 + ... + 1274186.

It is an arithmetic number, because the mean of its divisors is an integer number (12741600).

Almost surely, 268804613 is an apocalyptic number.

It is an amenable number.

68804613 is a deficient number, since it is larger than the sum of its proper divisors (33128187).

68804613 is a wasteful number, since it uses less digits than its factorization.

68804613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548328 (or 2548322 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 68804613 is about 8294.8546099374. The cubic root of 68804613 is about 409.7690807538.

The spelling of 68804613 in words is "sixty-eight million, eight hundred four thousand, six hundred thirteen".

Divisors: 1 3 9 27 2548319 7644957 22934871 68804613