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6805054861 = 11679233453
BaseRepresentation
bin1100101011001110…
…01110010110001101
3122120020220121022221
412111213032112031
5102414043223421
63043131535341
7330431004043
oct62547162615
918506817287
106805054861
112982304490
12139abba551
13845acb6a7
14487ad2393
1529c65c841
hex1959ce58d

6805054861 has 8 divisors (see below), whose sum is σ = 7534498464. Its totient is φ = 6094078320.

The previous prime is 6805054829. The next prime is 6805054871. The reversal of 6805054861 is 1684505086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6805054861 - 25 = 6805054829 is a prime.

It is a super-2 number, since 2×68050548612 = 92617543322439458642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6805054811) 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, 4615990 + ... + 4617463.

It is an arithmetic number, because the mean of its divisors is an integer number (941812308).

Almost surely, 26805054861 is an apocalyptic number.

It is an amenable number.

6805054861 is a deficient number, since it is larger than the sum of its proper divisors (729443603).

6805054861 is a wasteful number, since it uses less digits than its factorization.

6805054861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9233531.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 6805054861 is about 82492.7564153362. The cubic root of 6805054861 is about 1895.0058001832.

The spelling of 6805054861 in words is "six billion, eight hundred five million, fifty-four thousand, eight hundred sixty-one".

Divisors: 1 11 67 737 9233453 101567983 618641351 6805054861