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67285969 = 439153271
BaseRepresentation
bin1000000001010…
…11001111010001
311200121110222221
410000223033101
5114211122334
610402101041
71444631002
oct400531721
9150543887
1067285969
1134a87a43
121a64a781
1310c2b3aa
148d171a9
155d918b4
hex402b3d1

67285969 has 4 divisors (see below), whose sum is σ = 67439680. Its totient is φ = 67132260.

The previous prime is 67285951. The next prime is 67285979. The reversal of 67285969 is 96958276.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67285969 - 29 = 67285457 is a prime.

It is a super-3 number, since 3×672859693 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67285979) 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 3 ways as a sum of consecutive naturals, for example, 76197 + ... + 77074.

It is an arithmetic number, because the mean of its divisors is an integer number (16859920).

Almost surely, 267285969 is an apocalyptic number.

It is an amenable number.

67285969 is a deficient number, since it is larger than the sum of its proper divisors (153711).

67285969 is a wasteful number, since it uses less digits than its factorization.

67285969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153710.

The product of its digits is 1632960, while the sum is 52.

The square root of 67285969 is about 8202.8025088990. The cubic root of 67285969 is about 406.7318390428.

The spelling of 67285969 in words is "sixty-seven million, two hundred eighty-five thousand, nine hundred sixty-nine".

Divisors: 1 439 153271 67285969