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67870943 = 715761757
BaseRepresentation
bin1000000101110…
…10000011011111
311201201012102122
410002322003133
5114333332233
610422413155
71452615320
oct402720337
9151635378
1067870943
1135347498
121a8911bb
13110a472a
14902a447
155e59d98
hex40ba0df

67870943 has 8 divisors (see below), whose sum is σ = 78062112. Its totient is φ = 57803616.

The previous prime is 67870927. The next prime is 67870967. The reversal of 67870943 is 34907876.

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 67870943 - 24 = 67870927 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67870894 and 67870903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67870973) 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, 29780 + ... + 31977.

It is an arithmetic number, because the mean of its divisors is an integer number (9757764).

Almost surely, 267870943 is an apocalyptic number.

67870943 is a deficient number, since it is larger than the sum of its proper divisors (10191169).

67870943 is a wasteful number, since it uses less digits than its factorization.

67870943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61921.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 67870943 is about 8238.3823047975. The cubic root of 67870943 is about 407.9071279547.

The spelling of 67870943 in words is "sixty-seven million, eight hundred seventy thousand, nine hundred forty-three".

Divisors: 1 7 157 1099 61757 432299 9695849 67870943