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68860271 = 79871649
BaseRepresentation
bin1000001101010…
…11100101101111
311210120110112102
410012223211233
5120112012041
610455525315
71464205544
oct406534557
9153513472
1068860271
1135962817
121b08983b
131135cb2c
149206bcb
1560a309b
hex41ab96f

68860271 has 4 divisors (see below), whose sum is σ = 69732000. Its totient is φ = 67988544.

The previous prime is 68860241. The next prime is 68860291. The reversal of 68860271 is 17206886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68860271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68860241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435746 + ... + 435903.

It is an arithmetic number, because the mean of its divisors is an integer number (17433000).

Almost surely, 268860271 is an apocalyptic number.

68860271 is a deficient number, since it is larger than the sum of its proper divisors (871729).

68860271 is an equidigital number, since it uses as much as digits as its factorization.

68860271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871728.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 68860271 is about 8298.2089031308. The cubic root of 68860271 is about 409.8795422454.

The spelling of 68860271 in words is "sixty-eight million, eight hundred sixty thousand, two hundred seventy-one".

Divisors: 1 79 871649 68860271