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67538317 = 7211125303
BaseRepresentation
bin1000000011010…
…00110110001101
311201002022011011
410001220312031
5114242211232
610411325221
71450031500
oct401506615
9151068134
1067538317
113513a5a0
121a750811
1310cb9202
148d81137
155de1547
hex4068d8d

67538317 has 12 divisors (see below), whose sum is σ = 85707936. Its totient is φ = 52626840.

The previous prime is 67538309. The next prime is 67538321. The reversal of 67538317 is 71383576.

It is not a de Polignac number, because 67538317 - 23 = 67538309 is a prime.

It is a super-2 number, since 2×675383172 = 9122848526384978, which contains 22 as substring.

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 67538317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67538347) 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 11 ways as a sum of consecutive naturals, for example, 62113 + ... + 63190.

It is an arithmetic number, because the mean of its divisors is an integer number (7142328).

Almost surely, 267538317 is an apocalyptic number.

It is an amenable number.

67538317 is a deficient number, since it is larger than the sum of its proper divisors (18169619).

67538317 is a wasteful number, since it uses less digits than its factorization.

67538317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125328 (or 125321 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 67538317 is about 8218.1699301000. The cubic root of 67538317 is about 407.2396711304.

The spelling of 67538317 in words is "sixty-seven million, five hundred thirty-eight thousand, three hundred seventeen".

Divisors: 1 7 11 49 77 539 125303 877121 1378333 6139847 9648331 67538317