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67070068 = 22139713297
BaseRepresentation
bin1111111111011…
…0100001110100
311200012111211121
43333312201310
5114132220233
610353313324
71443041362
oct377664164
9150174747
1067070068
113494a80a
121a565844
1310b84040
148c9c632
155d4c92d
hex3ff6874

67070068 has 24 divisors (see below), whose sum is σ = 127713992. Its totient is φ = 30633984.

The previous prime is 67070063. The next prime is 67070071. The reversal of 67070068 is 86007076.

It can be written as a sum of positive squares in 4 ways, for example, as 2396304 + 64673764 = 1548^2 + 8042^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67070063) 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 7 ways as a sum of consecutive naturals, for example, 1605 + ... + 11692.

Almost surely, 267070068 is an apocalyptic number.

It is an amenable number.

67070068 is a deficient number, since it is larger than the sum of its proper divisors (60643924).

67070068 is a wasteful number, since it uses less digits than its factorization.

67070068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13411 (or 13409 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 67070068 is about 8189.6317377523. The cubic root of 67070068 is about 406.2963450717.

The spelling of 67070068 in words is "sixty-seven million, seventy thousand, sixty-eight".

Divisors: 1 2 4 13 26 52 97 194 388 1261 2522 5044 13297 26594 53188 172861 345722 691444 1289809 2579618 5159236 16767517 33535034 67070068