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68899073 = 196159447
BaseRepresentation
bin1000001101101…
…01000100000001
311210122102202112
410012311010001
5120114232243
610500425105
71464426635
oct406650401
9153572675
1068899073
1135989991
121b0a8195
13113746a9
149216dc5
1560ae818
hex41b5101

68899073 has 8 divisors (see below), whose sum is σ = 73715520. Its totient is φ = 64201680.

The previous prime is 68899067. The next prime is 68899087. The reversal of 68899073 is 37099886.

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 68899073 - 216 = 68833537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68899013) 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, 28565 + ... + 30882.

It is an arithmetic number, because the mean of its divisors is an integer number (9214440).

Almost surely, 268899073 is an apocalyptic number.

It is an amenable number.

68899073 is a deficient number, since it is larger than the sum of its proper divisors (4816447).

68899073 is a wasteful number, since it uses less digits than its factorization.

68899073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59527.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 68899073 is about 8300.5465482702. The cubic root of 68899073 is about 409.9565153168.

The spelling of 68899073 in words is "sixty-eight million, eight hundred ninety-nine thousand, seventy-three".

Divisors: 1 19 61 1159 59447 1129493 3626267 68899073