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67005005 = 5107125243
BaseRepresentation
bin1111111110011…
…0101001001101
311200002012120212
43333212221031
5114123130010
610352052205
71442350604
oct377465115
9150065525
1067005005
1134905941
121a534065
1310b60542
148c82a3b
155d38505
hex3fe6a4d

67005005 has 8 divisors (see below), whose sum is σ = 81158112. Its totient is φ = 53102608.

The previous prime is 67004969. The next prime is 67005011. The reversal of 67005005 is 50050076.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-67005005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 62087 + ... + 63156.

It is an arithmetic number, because the mean of its divisors is an integer number (10144764).

Almost surely, 267005005 is an apocalyptic number.

It is an amenable number.

67005005 is a deficient number, since it is larger than the sum of its proper divisors (14153107).

67005005 is a wasteful number, since it uses less digits than its factorization.

67005005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125355.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 67005005 is about 8185.6584951976. The cubic root of 67005005 is about 406.1649232496.

The spelling of 67005005 in words is "sixty-seven million, five thousand, five".

Divisors: 1 5 107 535 125243 626215 13401001 67005005