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8087442617 = 10781750157
BaseRepresentation
bin1111000100000110…
…01001010010111001
3202212121221122121202
413202003021102321
5113030341130432
63414301543545
7404262061622
oct74203112271
922777848552
108087442617
113480172381
121698574bb5
139bb6ab007
1456a14aa49
1532501e462
hex1e20c94b9

8087442617 has 4 divisors (see below), whose sum is σ = 8088203556. Its totient is φ = 8086681680.

The previous prime is 8087442607. The next prime is 8087442619. The reversal of 8087442617 is 7162447808.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5424469801 + 2662972816 = 73651^2 + 51604^2 .

It is a cyclic number.

It is not a de Polignac number, because 8087442617 - 28 = 8087442361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8087442619) 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, 364298 + ... + 385859.

It is an arithmetic number, because the mean of its divisors is an integer number (2022050889).

Almost surely, 28087442617 is an apocalyptic number.

It is an amenable number.

8087442617 is a deficient number, since it is larger than the sum of its proper divisors (760939).

8087442617 is a wasteful number, since it uses less digits than its factorization.

8087442617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760938.

The product of its (nonzero) digits is 602112, while the sum is 47.

The square root of 8087442617 is about 89930.2097017459. The cubic root of 8087442617 is about 2007.2604954582.

The spelling of 8087442617 in words is "eight billion, eighty-seven million, four hundred forty-two thousand, six hundred seventeen".

Divisors: 1 10781 750157 8087442617