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67068943 = 236771613
BaseRepresentation
bin1111111111011…
…0010000001111
311200012110021221
43333312100033
5114132201233
610353304211
71443035164
oct377662017
9150173257
1067068943
1134949987
121a565067
1310b83686
148c9c06b
155d4c42d
hex3ff640f

67068943 has 16 divisors (see below), whose sum is σ = 72147456. Its totient is φ = 62203680.

The previous prime is 67068931. The next prime is 67068959. The reversal of 67068943 is 34986076.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 67068943 - 29 = 67068431 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 67068943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67068913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109105 + ... + 109717.

It is an arithmetic number, because the mean of its divisors is an integer number (4509216).

Almost surely, 267068943 is an apocalyptic number.

67068943 is a deficient number, since it is larger than the sum of its proper divisors (5078513).

67068943 is a wasteful number, since it uses less digits than its factorization.

67068943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 67068943 is about 8189.5630530572. The cubic root of 67068943 is about 406.2940733880.

The spelling of 67068943 in words is "sixty-seven million, sixty-eight thousand, nine hundred forty-three".

Divisors: 1 23 67 71 613 1541 1633 4757 14099 41071 43523 109411 944633 1001029 2916041 67068943