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67052071 = 1392571877
BaseRepresentation
bin1111111111001…
…0001000100111
311200011121011001
43333302020213
5114131131241
610353054131
71442635042
oct377621047
9150147131
1067052071
1134938239
121a557347
1310b78aa8
148c95c59
155d47431
hex3ff2227

67052071 has 8 divisors (see below), whose sum is σ = 67833360. Its totient is φ = 66275328.

The previous prime is 67052057. The next prime is 67052077. The reversal of 67052071 is 17025076.

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

It is a cyclic number.

It is not a de Polignac number, because 67052071 - 29 = 67051559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67052077) 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, 34785 + ... + 36661.

It is an arithmetic number, because the mean of its divisors is an integer number (8479170).

Almost surely, 267052071 is an apocalyptic number.

67052071 is a deficient number, since it is larger than the sum of its proper divisors (781289).

67052071 is a wasteful number, since it uses less digits than its factorization.

67052071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 67052071 is about 8188.5328966794. The cubic root of 67052071 is about 406.2600011423.

The spelling of 67052071 in words is "sixty-seven million, fifty-two thousand, seventy-one".

Divisors: 1 139 257 1877 35723 260903 482389 67052071