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67876705 = 5131044257
BaseRepresentation
bin1000000101110…
…11011101100001
311201201111100001
410002323131201
5114334023310
610422500001
71452641161
oct402733541
9151644301
1067876705
1135350856
121a894601
13110a7240
14902c5a1
155e5b93a
hex40bb761

67876705 has 8 divisors (see below), whose sum is σ = 87717672. Its totient is φ = 50124288.

The previous prime is 67876687. The next prime is 67876709. The reversal of 67876705 is 50767876.

It can be written as a sum of positive squares in 4 ways, for example, as 1682209 + 66194496 = 1297^2 + 8136^2 .

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 67876705 - 211 = 67874657 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67876709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522064 + ... + 522193.

It is an arithmetic number, because the mean of its divisors is an integer number (10964709).

Almost surely, 267876705 is an apocalyptic number.

67876705 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67876705 is a deficient number, since it is larger than the sum of its proper divisors (19840967).

67876705 is a wasteful number, since it uses less digits than its factorization.

67876705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044275.

The product of its (nonzero) digits is 493920, while the sum is 46.

The square root of 67876705 is about 8238.7320019527. The cubic root of 67876705 is about 407.9186709128.

The spelling of 67876705 in words is "sixty-seven million, eight hundred seventy-six thousand, seven hundred five".

Divisors: 1 5 13 65 1044257 5221285 13575341 67876705